JP2021107387A - Constant quantity jetting aerosol product for insect pest control, and insect pest control method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a quantitative spray aerosol product for pest control capable of exerting an excellent control effect on pests, particularly mosquitoes in a narrow space, and suppressing a feeling of irritation felt by humans and pets. do.
SOLUTION: This is a quantitative injection aerosol product for pest control for controlling pests in a narrow space having a volume of 2.0 to 18.8 m ³ , and is an aerosol stock solution containing a control component and an organic solvent, and a propellant. And are filled in an aerosol container equipped with a fixed-quantity injection valve having an injection capacity of 0.08 to 2.0 mL at a time, and the specific gravity of the aerosol stock solution is 0.76 to 0.95. The volume ratio (a / b) of the aerosol stock solution (a) and the propellant (b) is a / b ≤ 50/50 by volume, and the internal pressure is 0.25 to 0.60 MPa at 25 ° C. Is set to.
[Selection diagram] None

Description

The present invention relates to a pest control quantitative injection aerosol product for controlling pests in a narrow space having a volume of 2.0 to 18.8 m ^{3, and a pest control method using the same.}

Aerosol products that can easily inject control components into the treatment space are used in various applications as products for exterminating pests. For example, those for controlling flying pests that invade indoors such as houses (see, for example, Patent Document 1) and those for treating breeding sheds for dogs, cats, etc. (see, for example, Patent Document 2) are known. Has been done.

In the aerosol product of Patent Document 1, the residual rate of the treated chemical amount in the treatment space in the air is adjusted to 15% or more when 1 hour has passed from the start of the treatment, or 5% or more when 2 hours have passed from the start of the treatment. According to Patent Document 1, after releasing a drug, the drug is kept in the air to suppress a decrease in air concentration, whereby a sufficient extermination effect against mosquitoes lurking in the shadow can be maintained. Has been done.

The aerosol product of Patent Document 2 is installed at the entrance / exit of a breeding shed and injects the entire contents. According to Patent Document 2, when this aerosol product is sprayed toward a breeding shed, it is easy to process and it is safe because the user is not exposed to the drug.

Japanese Unexamined Patent Publication No. 2001-17555 Japanese Unexamined Patent Publication No. 2001-238586

The aerosol product of Patent Document 1 has been attempted to prolong the duration of the drug in the air by adjusting the particle size of the drug diffusing indoors such as a house, and to prolong the duration of the drug. There is. However, the aerosol product of Patent Document 1 is intended to be used in a room of 8 tatami mats, and it cannot always be said that the formulation design is suitable for use in a narrow space such as a tent or an automobile.

The aerosol product of Patent Document 2 cannot be said to be a dosage form that is easily and frequently adopted because it is necessary to use a full-volume injection type aerosol device and it takes time and effort to prepare before use. In particular, the use of a full-volume injection type aerosol device is intended for processing in a breeding shed in the absence of dogs, cats, etc., and in a small space where people or pets such as tents and automobiles stay, people and There was a risk that the pet would inhale the drug and the feeling of irritation would increase. In addition, the aerosol product of Patent Document 2 has a formulation design for fleas and ticks that are blood-sucking pests such as dogs and cats, and is not necessarily suitable for the purpose of exterminating flying pests such as mosquitoes. It wasn't.

In this way, it is desired to develop an aerosol product that can reduce the irritation that is a concern when used in a narrow space where people and pets stay, and further exert a sufficient control effect on pests, especially mosquitoes. However, nothing has been put into practical use yet.

The present invention has been made in view of the above problems, and it is possible to exert an excellent control effect on pests, particularly mosquitoes in a narrow space, while reducing the irritation felt by humans and pets. It is an object of the present invention to provide a quantitative injection aerosol product for pest control that can be used, and a pest control method using the same.

The characteristic configuration of the quantitative injection aerosol product for pest control according to the present invention for solving the above problems is
A quantitative injection aerosol product for pest control for controlling pests in a narrow space with a volume of 2.0 to 18.8 m ^3.
The aerosol stock solution containing the control component and the organic solvent and the propellant are filled in an aerosol container equipped with a fixed-quantity injection valve having an injection capacity of 0.08 to 2.0 mL at one time.
The specific gravity of the aerosol stock solution is 0.76 to 0.95.
In the aerosol container, the volume ratio (a / b) of the aerosol stock solution (a) and the propellant (b) is a / b ≤ 50/50 in terms of volume ratio, and the internal pressure is 0.20 to 0.20 at 25 ° C. It is set to be 0.60 MPa.

According to the quantitative injection aerosol product for pest control of this configuration, the aerosol stock solution containing the control component and the organic solvent and the propellant are injected at a fixed volume of 0.08 to 2.0 mL. ^{The volume is 2.0 to 18.8 m 3} due to the specific gravity, volume ratio (a / b) of the aerosol stock solution, and the internal pressure at 25 ° C. being in the above range. When injected in a narrow space, the injected particles adhere to the wall surface without excessively remaining in the air. Pests, especially mosquitoes such as mosquitoes, stay on the wall surface for a longer time than they fly, and the jet particles adhering to the wall surface make them mosquitoes in a narrow space. On the other hand, an excellent control effect can be exhibited. On the other hand, since the jet particles do not excessively remain in the air even in a narrow space, the stimulating feeling felt by a person or a pet, which is a concern when used in a narrow space, is reduced.

In the pest control quantitative injection aerosol product according to the present invention.
It is preferable that the injection amount of the control component is set to 0.2 to ^{20.0 mg per volume of 2.0 to 18.8 m 3.}

According to pest control for quantitative injection aerosol product of the present configuration, the injection amount of control components, volume per 2.0～18.8M ^3, by being set to be 0.2~20.0mg When the aerosol is sprayed in a narrow space, it is possible to obtain an appropriate control effect on pests, particularly mosquitoes, and reduce the irritation to humans and pets.

In the pest control quantitative injection aerosol product according to the present invention.
The content of the control component in the aerosol stock solution is preferably 0.2 to 25.0 w / v%.

According to the quantitative injection aerosol product for pest control of this configuration, the content of the control component in the aerosol stock solution is 0.2 to 25.0 w / v%, so that when the aerosol is injected in a narrow space, the pests, In particular, it is possible to obtain an appropriate control effect against mosquitoes, and at the same time, it is possible to reduce the feeling of irritation to humans and pets.

In the pest control quantitative injection aerosol product according to the present invention.
The organic solvent is preferably a lower alcohol having 2 to 3 carbon atoms.

According to the quantitative injection aerosol product for pest control of this configuration, the organic solvent is a lower alcohol having 2 to 3 carbon atoms, so that stickiness and dirt are suppressed on the adhesion surface of the injection particles in a narrow space. Can be done.

In the pest control quantitative injection aerosol product according to the present invention.
The control component preferably contains a pyrethroid compound having a vapor pressure of 2 × 10 ^-4 to 1 × 10 ^{−2 mmHg at 30 ° C.}

According to the pest control quantitative injection aerosol product of this configuration, the control component ^{contains a pyrethroid compound having a vapor pressure of 2 × 10 -4} to 1 × 10 ^-2 mmHg at 30 ° C., so that it is normally kept at room temperature. The control component is easily volatilized in a narrow space where a leaning person or a pet stays, and an excellent control effect against pests, particularly mosquitoes can be obtained.

In the pest control quantitative injection aerosol product according to the present invention.
The pyrethroid compound is preferably at least one selected from the group consisting of transfluthrin, metoflutrin, and profluthrin.

According to the pest control quantitative injection aerosol product having this configuration, when the pyrethroid compound is the above-mentioned appropriate compound, it is possible to exert a better control effect on pests, particularly mosquitoes, in a narrow space.

In the pest control quantitative injection aerosol product according to the present invention.
It is preferable that the injection force at an injection distance of 15 cm is set to 3.0 to 20.0 gf.

According to the pest control quantitative injection aerosol product of this configuration, by setting the injection force at an injection distance of 15 cm to 3.0 to 20.0 gf, the injected particles reach the wall surface when injected in a narrow space. , A practically sufficient control effect on pests, especially mosquitoes, can be obtained, and a feeling of irritation to humans and pets can be reduced.

The characteristic configuration of the pest control method according to the present invention for solving the above problems is
A pest control method using the above-mentioned quantitative injection aerosol product for pest control.
The purpose is to inject the quantitative injection aerosol product for pest control in a narrow space ^{having a volume of 2.0 to 18.8 m 3.}

According to the pest control method of this configuration, by injecting the above-mentioned quantitative injection aerosol product for pest control ^{in a narrow space having a volume of 2.0 to 18.8 m 3} , the injected particles are excessively injected in the narrow space. It can be attached to the wall surface without remaining in the air. Pests, especially mosquitoes such as mosquitoes, stay on the wall surface for a longer time than they fly, and the jet particles adhering to the wall surface make them mosquitoes in a narrow space. On the other hand, an excellent control effect can be exhibited. On the other hand, since the jet particles do not remain excessively in the air, it is possible to reduce the irritation felt by people and pets who are concerned about their use in a narrow space.

In the pest control method according to the present invention
It is preferable to inject so that the injection direction angle is 30 to 60 ° with respect to the horizontal plane.

According to the pest control method of this configuration, the diffusion uniformity can be improved by injecting the pest so that the injection direction angle is 30 to 60 ° with respect to the horizontal plane.

Hereinafter, the quantitative injection aerosol product for pest control of the present invention and the pest control method will be described. However, the present invention is not intended to be limited to the configurations described below.

[Quantitative injection aerosol product for pest control]
The pest control quantitative injection aerosol product of the present invention is a quantitative injection type aerosol used for controlling pests, especially mosquitoes in a narrow space, and contains an aerosol stock solution containing a control component and a solvent, and a propellant. It is configured as filled in an aerosol container equipped with a metering injection valve. Here, the "narrow space" in the present invention ^{assumes a space having a volume of about 2.0 to 18.8 m 3} , for example, a car, a tent, a toilet, a warehouse, a storeroom, a garage, a washroom, and an entrance. Such as a closed or semi-closed space can be mentioned. More specifically, for example, ^{as a narrow space having a volume of 2.0 to 4.0 m 3} , an interior space of a light car or a compact car can be mentioned, and a narrow space having a ^{volume of 4.0 to 18.8 m 3 can be mentioned.} A small room of 1 to 4.5 tatami mats can be mentioned as an example. Since the quantitative injection aerosol product for pest control of the present invention is a quantitative injection type aerosol, the amount of chemicals injected is small, and further, the specific gravity of the aerosol stock solution, the volume ratio of the aerosol stock solution and the propellant in the aerosol container, and 25 By appropriately setting the internal pressure of the aerosol container at ° C, the effect of controlling pests in a narrow space and the effect of reducing the stimulus felt by humans and pets are realized. In this specification, in addition to the extermination effect based on the knockdown effect and the lethal effect, the repellent effect is collectively referred to as the control effect. Even if the extermination effect is low, if there is a sufficient repellent effect, there are many situations where control can be achieved in practice.

<Aerosol stock solution>
The control components that are one of the main components of the aerosol stock solution are, for example, metoflutrin, profluthrin, transfluthrin, empentrin, terraresulin, flamethrin, phenothrin, ciphenotrin, permethrin, cyfluthrin, imiprothrin, bifenthrin, fenpropathrin, tralomethrin, and It contains a pyrethroid compound such as etofenprox, and more preferably contains a room temperature volatilizing pyrethroid compound having a ^{vapor pressure of 2 × 10 -4} to 1 × 10 ^{−2 mmHg at 30 ° C.} Examples of the room temperature volatilizing pyrethroid compound include metoflutrin, profluthrin, transfluthrin, empentrin, terraresulin, flamethrin and the like. Among these, volatilization (vapor pressure), stability, basal insecticidal efficacy and the like are taken into consideration. Then, metoflutrin, profluthrin, and transfluthrin are preferable. The above pyrethroid compounds can be used alone or in admixture of a plurality of types. If an optical isomer based on asymmetric carbon or a geometric isomer based on a double bond is present in the acid portion or alcohol moiety of the pyrethroid compound, each of them or any mixture thereof is also included in the present invention.

As the control component, in addition to the above-mentioned pyrethroid compound, another compound having an insecticidal activity may be added as appropriate. Examples of such compounds include organosilicon compounds such as silafluofen, neonicotinoid compounds such as dinotefuran, imidacloprid, and clothianidin, and carbamate compounds such as propoxul.

The content of the control component in the aerosol stock solution is preferably 0.2 to 25.0 w / v% from the viewpoint of reducing the irritation to humans and pets when used in a narrow space, preferably 0.4. It is more preferably ~ 12.5 w / v%, and even more preferably 0.5 to 5.0 w / v%. If the content of the control component in the aerosol stock solution is within the above range, it is possible to obtain an appropriate control effect against pests, especially mosquitoes, when the aerosol is sprayed in a narrow space, but to humans and pets. The feeling of irritation can be reduced.

Examples of the organic solvent which is one of the main components of the aerosol stock solution include ethanol, a lower alcohol having 2 to 3 carbon atoms such as isopropanol (IPA), a hydrocarbon solvent such as normal paraffin, and isoparaffin, and myristic acid. Examples thereof include higher fatty acid esters having 16 to 20 carbon atoms such as isopropyl (IPM), glycol ether solvents having 3 to 10 carbon atoms, and ketone solvents. Among these, lower alcohols having 2 to 3 carbon atoms are more preferable because they are less likely to cause stickiness and stains on the floor surface and the wall surface to which the jet particles are attached, as well as the diffusion uniformity of the jet particles. The above-mentioned organic solvent can be used alone or in combination of a plurality of types, but it is preferable to use only one type of organic solvent from the viewpoint of simplifying the manufacturing process. In addition to the organic solvent, it is also possible to mix an aqueous solvent such as water.

The specific gravity of the aerosol stock solution is set to 0.76 to 0.95, preferably 0.76 to 0.85, and more preferably 0.76 to 0.82. The specific gravity of the aerosol stock solution is an important factor related to the sedimentation of the injected particles, and if the specific gravity of the aerosol stock solution is within the above range, the injected particles after injection can be appropriately adhered to the wall surface in a narrow space. Pests, especially mosquitoes such as mosquitoes, stay on the wall surface for a longer time than they are flying, and spend more time asking for an opportunity to suck blood. , Mosquitoes can be sufficiently controlled in a narrow space.

In addition to the above components, the aerosol stock solution contains fungicides, antibacterial agents, fungicides, antiviral agents, air fresheners, deodorants, stabilizers for repellents, acaricides, fungi, fungi, etc. , Antistatic agents, antifoaming agents, excipients and the like can be appropriately blended. Examples of the repellent include DEET, ethyl butylacetylaminopropionate (IR3535), icaridin and the like. Examples of acaricidal agents include methyl 5-chloro-2-trifluoromethanesulfonamide benzoate, 3-iodo-2-propynylbutylcarbamate, amidoflumeth, benzyl benzoate, phenyl salicylate, benzyl salicylate, butyl adipate, diethyl phthalate, And dibutyl phthalate and the like. Antifungal agents, antibacterial agents, fungicides, and antiviral agents include hinokithiol, 2-mercaptobenzothiazole, 2- (4-thiazolinyl) benzimidazole, 5-chloro-2-methyl-4-isothiazolin-3-one. , Triphorin, 3-methyl-4-isopropylphenol, ortho-phenylphenol and the like. Fragrances include orange oil, lemon oil, lavender oil, peppermint oil, eucalyptus oil, lemon eucalyptus oil, citronella oil, lime oil, yuzu oil, jasmine oil, cypress oil, green tea essential oil, peppermint oil, menthol, p-menthane. Aromatic components such as -3,8-diol, menthyl acetate, limonene, α-pinene, linalol, geraniol, phenylethyl alcohol, amylcinnamic aldehyde, cumin aldehyde, and benzyl acetate, green leaf alcohol called "green scent" Examples include fragrance components containing green leaf aldehyde.

The pest control quantitative injection aerosol product of the present invention can also adopt an aqueous formulation. In this case, the amount of water contained in the aerosol stock solution is preferably 5 to 50 v / v%, and a small amount of nonionic surfactant is used as a solubilizing aid within a range that does not affect the injection pattern of the injected particles. May be added. Examples of the nonionic surfactant include polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, ethers such as polyoxyethylene alkyl amino ethers, and polyethylene. Examples thereof include glycol fatty acid esters, polyoxyethylene sorbitan fatty acid esters, fatty acid esters such as polyoxyethylene glycerin fatty acid esters, polyoxyethylene styrene phenol, and polyalkalolamide of fatty acids.

<Injector>
The propellant used in the quantitative injection aerosol product for pest control of the present invention includes liquefied petroleum gas (LPG), dimethyl ether (DME), liquefied gas such as hydrofluoroolefin, nitrogen gas, carbon dioxide gas, nitrogen phosphite, and compression. Examples include compressed gas such as air. The above propellant can be used alone or in a mixed state, but usually one containing LPG as a main component is easy to use.

In the quantitative injection aerosol product for pest control of the present invention, an aerosol stock solution containing a control component and an organic solvent and a propellant are filled in an aerosol container, and the aerosol stock solution (a) and the propellant (a) and the propellant ( The volume ratio (a / b) with b) is set to a / b ≤ 50/50 (0 <a / b) in terms of volume ratio. The volume ratio (a / b) is preferably set to 1/99 ≤ a / b ≤ 50/50, and more preferably 5/95 ≤ a / b ≤ 50/50. If the volume ratio (a / b) is within the above range, when injected in a narrow space, the injected particles adhere to the wall surface without excessively remaining in the air, so that a sufficient amount of control component is applied to the wall surface. Can be attached to. As a result, it is possible to obtain an appropriate control effect on pests, particularly mosquitoes, and reduce the feeling of irritation to humans and pets.

In the quantitative injection aerosol product for pest control of the present invention, the internal pressure of the aerosol container is set to 0.25 to 0.60 MPa at 25 ° C., preferably 0.30 to 0.50 MPa. If the internal pressure is within the above range at 25 ° C., a sufficient amount of control component can be adhered to the wall surface when sprayed in a narrow space. If the internal pressure is less than 0.20 MPa, the injected particles tend to settle before reaching the wall surface after injection, so that the amount of the control component adhered to the wall surface becomes insufficient, and as a result, pests cannot be sufficiently controlled. There is a risk. If the internal pressure exceeds 0.60 MPa, the injection momentum is too strong, and when it reaches the wall surface, some of the injection particles bounce off, causing a strong stimulus to people and pets when the aerosol is injected in a narrow space. May be given. The internal pressure of such an aerosol product can be appropriately adjusted depending on the type of propellant, the vapor pressure of the propellant, and the like. The aerosol container may be a pressure-resistant container that can withstand an internal pressure of 0.25 to 0.60 MPa, and examples of the material thereof include metals such as aluminum and tin, synthetic resins such as polyethylene terephthalate, and pressure-resistant glass. Further, the aerosol container may be translucent or transparent when the material is a synthetic resin.

In the pest control quantitative injection aerosol product of the present invention, the injection force is preferably set to 3.0 to 20.0 gf at a distance of 15 cm from the injection port, preferably 3.0 to 15.0 gf. Is more preferable. If the jetting force is within the above range, the jetting particles will reach the wall surface when jetted in a narrow space, and a practically sufficient control effect against pests, especially mosquitoes, will be obtained, and a feeling of irritation to humans and pets will be obtained. Can also be reduced.

The fixed-quantity injection aerosol product for pest control of the present invention is provided with a fixed-quantity injection valve for injecting a constant amount in a narrow space, and the injection capacity of the fixed-quantity injection valve is set to 0.08 to 2.0 mL. , 0.08 to 1.0 mL is preferable, 0.08 to 0.4 mL is more preferable, and 0.08 to 0.2 mL is further preferable. If the injection capacity per injection is within the above range, a practically sufficient control effect against pests, especially mosquitoes, can be obtained when injected in a narrow space, and the feeling of irritation to humans and pets can be reduced. Can be done. If the injection capacity at one time is less than 0.08 mL, there is a risk that pests cannot be sufficiently controlled in a narrow space. If the injection capacity at one time exceeds 2.0 mL, there is a risk of giving a strong stimulating feeling to people and pets when the aerosol is injected in a narrow space.

In the pest control fixed-quantity injection aerosol product of the present invention, the injection diameter of the injection member attached to the fixed-quantity injection valve is preferably 0.2 to 1.0 mm. When the injection diameter is 0.2 to 1.0 mm, the injection force can be appropriately adjusted within the range. The shape (cross-sectional shape) of the injection port is not particularly limited, and examples thereof include a circular shape, a polygonal shape such as a quadrangle, an elliptical shape, and the like, and a circular shape is preferable. Here, the injection port diameter means an elliptical major axis when the shape of the injection port is elliptical, and means the diameter of a polygonal circumscribed circle when the shape of the injection port is polygonal.

In the injection port of the quantitative injection aerosol product for pest control of the present invention, the elevation angle of the injection port with respect to the horizontal plane is usually set to 0 to 60 °, preferably 10 to 60 °, and is preferably 15 to 50. More preferably, it is set to °. When the elevation angle of the injection port with respect to the horizontal plane is within the above range, injection defects are unlikely to occur, and the aerosol stock solution can be stably injected.

Pest control for quantitative injection aerosol product of the present invention, the injection amount of the control component, volume 2.0~18.8m per ^3, that is set to be 0.2~20.0mg Preferably, It is more preferably set to be 0.3 to 10.0 mg, and further preferably set to 0.4 to 8.0 mg. When the spray amount of the control component is in the above range, the control effect on mosquitoes is appropriately exhibited in a narrow space having a ^{volume of 2.0 to 18.8 m 3, and the mosquitoes are surely knocked down or killed.} However, it is possible to reduce the feeling of irritation to people and pets. The pest control quantitative injection aerosol product of the present invention is preferably set so that the injection amount of the control component by one injection is 0.2 to 20.0 mg, preferably 0.3 to 10 mg. It is more preferable that it is set to. In this case, it is possible to process a narrow space having a volume of 2.0 to 18.8 m ^{3 by one injection.} Further, the quantitative injection aerosol product for pest control of the present invention is preferably such that the injection amount of the control component per ^{2.0 to 18.8 m 3 in volume becomes 0.2 to 20.0 mg by a plurality of injections.} The injection amount of the control component by one injection may be set so as to be 0.3 to 10.0 mg. The injection amount of such a control component depends on the composition of the aerosol stock solution, the volume ratio (a / b) of the aerosol stock solution (a) and the propellant (b), the injection capacity per metering injection valve, and the like. It can be carried out by appropriately adjusting within the above range.

The pest control quantitative injection aerosol product according to the present invention can create an atmosphere in which pests can be controlled in a narrow space for about 3 to 24 hours with a single application.

<Pests to be controlled>
The pest control quantitative injection aerosol product of the present invention includes bedbugs such as Wamongokiburi, Kurogokiburi, and Chabanegokiburi, Bed Bugs such as Bed Bugs (Bed Bugs) and Bed Bugs (Nettite Bed Bugs), Bedbugs such as Bed Bugs, and Black Bed Bugs. , Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Spiders, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs, Bed Bugs In addition to bedbugs such as bedbugs, bed bugs, bed bugs, bedbugs, bedbugs, bedbugs, bedbugs, bedbugs, bedbugs, bedbugs, bedbugs, bedbugs, bedbugs To control various pests such as squid, bedbugs, clothing pests such as bed bugs, bed bugs such as bed bugs, and indoor dust pests such as bedbugs, leopard mites, dust mites, bedbugs, and bedbugs. Can be used for. In particular, it is effective in controlling mosquitoes such as Culex pipiens, Aedes albopictus, Aedes albopictus, and fly flies such as Culex pipiens and Aedes albopictus, and flying pests such as Culex pipiens, Aedes albopictus, Culex piens, Aedes albopictus, and Culex piens. , Aedes albopictus, Aedes albopictus, Culex pipiens and other mosquitoes have an excellent control effect.

[Pest control method]
The pest control method of the present invention is to inject the above-mentioned quantitative injection aerosol product for pest control in a narrow space ^{having a volume of 2.0 to 18.8 m 3.} In the pest control method of the present invention, by using the above-mentioned quantitative injection aerosol product for pest control, there is a concern in use in a narrow space while exhibiting an excellent control effect on pests, especially mosquitoes in a narrow space. It is possible to reduce the irritation felt by people and pets. In pest control method of the present invention, when injecting a metered dose aerosol products for pest control in narrow space, the injection amount of the control component, the volume 0.2~20.0mg per 2.0～18.8M ³ It is preferably adjusted, more preferably 0.3 to 10.0 mg, and even more preferably 0.4 to 8.0 mg. If the amount of the control component sprayed is within the above range, when the aerosol is sprayed in a narrow space, it is possible to obtain an appropriate control effect against pests, especially mosquitoes, while giving a feeling of irritation to humans and pets. Can be reduced.

In the pest control method of the present invention, it is preferable to inject the aerosol so that the injection direction angle is 0 to 60 ° with respect to the horizontal plane, and more preferably 30 to 60 °. When the injection direction angle of the aerosol is in the above range, the diffusion uniformity is excellent.

In order to verify the effect of the pest control quantitative injection aerosol product of the present invention, the pest control quantitative injection aerosol product (Examples 1 to 17) having the characteristic configuration of the present invention was prepared, and (1) the wall surface of the control component. Tests were conducted to evaluate adhesion, (2) irritation, and (3) effect on cloth. For comparison, quantitative injection aerosol products for pest control (Comparative Examples 1 to 6) not provided with the characteristic composition of the present invention were prepared and the same test was conducted. Furthermore, using the quantitative injection aerosol product for pest control of Example 1, (4) a test for evaluating the use in a tent was conducted. In the following Examples and Comparative Examples, the injection force of the quantitative injection aerosol for pest control was measured by a digital force gauge (FGC-0.5, manufactured by Nidec-Shimpo Corporation).

[Example 1]
Transfluthrin (2.0 w / v%), which is a control component, was dissolved in ethanol, which is an organic solvent, to prepare an aerosol stock solution. This aerosol stock solution had a specific gravity of 0.80. Quantitative injection of 9 mL of aerosol stock solution (a) and 21 mL of liquefied petroleum gas (b) as a propellant, with an injection volume of 0.2 mL so that the volume ratio (a / b) is 30/70. An aerosol container with a valve (pressure resistant container) was pressure-filled to obtain a quantitative injection aerosol product for pest control according to Example 1. This pest control quantitative injection aerosol product had an internal pressure of 0.45 MPa at 25 ° C. and an injection amount of the control component per injection was 1.2 mg. The injection force at an injection distance of 15 cm was 8.0 gf.

[Comparative Example 1]
Transfluthrin (2.0 w / v%), which is a control component, was dissolved in ethanol, which is an organic solvent, to prepare 30 mL of an aerosol stock solution. This aerosol stock solution had a specific gravity of 0.80. This aerosol stock solution was placed in a container with a pump-type spray head having a single injection capacity of about 0.2 mL to obtain a pest control pump-type spray product of Comparative Example 1. In this pest control pump type spray product, the injection amount of the control component per one injection was 1.2 mg. The injection force at an injection distance of 15 cm was 2.0 gf.

[Examples 2 to 17, Comparative Examples 2 to 6]
Various pest control quantitative injection aerosol products shown in Table 1 were prepared according to the procedure according to Example 1. In the pest control quantitative injection aerosol products of Examples 2 to 5, 7 to 12, and 15 to 17, and Comparative Examples 2 to 4 and 6, the fixed-quantity injection having a single injection capacity of 0.2 mL. In the pest control quantitative injection aerosol products of Examples 6 and 13, using an aerosol container with a valve, an aerosol container with a fixed-quantity injection valve having a single injection capacity of 0.4 mL was used, and in Example 14. In the pest control fixed-quantity injection aerosol product, an aerosol container with a fixed-quantity injection valve having a single injection capacity of 1.0 mL is used, and in the pest control fixed-quantity injection aerosol product of Comparative Example 5, one injection capacity is used. An aerosol container with a metered injection valve was used, which had a volume of 2.2 mL.

Tests were conducted on Examples 1 to 17 and Comparative Examples 1 to 6 to evaluate (1) the wall adhesion of the control component, (2) irritation, and (3) the effect on the cloth. The test results are shown in Table 2.

(1) Adhesion to the wall surface of the control component 20 cm x 20 cm on 6 floor surfaces and 9 wall surfaces of a closed small room (width 1.8 m, depth 1.3 m, height 1.8 m) ^{with a closed volume of 4.2 m 3.} Glass plate was installed. Standing at one of the four corners of the small room, the test aerosol product was sprayed once from a height of 1 m from the floor toward the center of the space slightly diagonally upward. Twenty minutes after the injection, the glass plate installed on the floor surface and the glass plate installed on the wall surface were taken out, and the adhering control components were washed out with acetone and analyzed by gas chromatography. Based on the obtained analytical values, the ratio of the amount of the control component adhering to the wall surface to the amount of the control component adhering to the floor surface within 20 minutes after the injection treatment was determined, and the wall surface adhesiveness was evaluated. The results are shown in three stages, A, B, and C, in order from the one with the best wall adhesion.

(2) small room of irritation Shimeki' volume 4.2 m ³ (width 1.8 m, depth 1.3 m, height 1.8 m) stands in one place of the four corners of the test aerosol product from the floor It was sprayed once from a height of 1 m toward the center of the space slightly diagonally upward. The feeling of irritation when waiting in the room for 10 minutes after the injection was evaluated based on the following evaluation criteria.
(Evaluation criteria)
A: I didn't feel any irritation.
B: I felt almost no irritation.
C: I felt a feeling of irritation.

(3) Impact on cloth In a narrow space such as a car or tent where textile products such as seat covers and futons are installed, in addition to less irritation, the textile products are affected by stains, stains, etc. Less is desired. Therefore, the following tests were conducted assuming the effects on seat covers and futons in automobiles and tents. A 5 cm x 5 cm polyester cloth was installed in the center of the floor of a closed small room (width 1.8 m, depth 1.3 m, height 1.8 m) with a volume of 4.2 m ^3. Standing at one of the four corners of the small room, the test aerosol product was sprayed once from a height of 1 m from the floor toward the center of the space slightly diagonally upward. Twenty minutes after the injection, the cloth was taken out, and the degree of liquid stain (contamination) and stickiness was evaluated based on the following evaluation criteria.
(Evaluation criteria)
A: No liquid stain (contamination) or stickiness occurred.
B: Liquid stains (contamination) and stickiness hardly occurred.
C: Liquid stains (contamination) and stickiness occurred.

As a result of the test, in the pest control quantitative injection aerosol products of Examples 1 to 17, all of the evaluation of the wall surface adhesion, the irritation feeling, and the influence on the cloth of the control component were good. From this, according to the pest control quantitative injection aerosol product of the present invention, it is possible to obtain an effect of controlling mosquitoes in a narrow space and an effect of reducing the irritation felt by humans and pets when used in a narrow space. It was confirmed that. Among them, the internal pressure of the aerosol product at 25 ° C. is 0.30 to 0.50 MPa, the injection capacity at one time is 0.1 to 0.4 mL, and the content of the control component is 0.2 to 5.0 w. The pest control quantitative injection aerosol products of Examples 1 to 10 and 13 having a / v% were particularly excellent in the evaluation of the wall surface adhesion and the irritation feeling of the control components. In addition, the quantitative injection aerosol products for pest control of Examples 1 to 7, 9, 11 to 14 and 17 using ethanol as an organic solvent did not cause liquid stains (contamination) or stickiness on the cloth, and the cloth did not have any liquid stains (contamination) or stickiness. The evaluation of the impact was particularly excellent.

On the other hand, the pump-type spray product of Comparative Example 1, the quantitative injection aerosol product for pest control of Comparative Example 2 having an internal pressure of less than 0.20 MPa at 25 ° C., and the aerosol stock solution having a specific gravity of more than 0.86 in Comparative Example 3 The pest control quantitative injection aerosol product and the pest control quantitative injection aerosol product of Comparative Example 6 in which the ratio of the propellant is smaller than 50/50 in the volume ratio (a / b) of the aerosol stock solution and the propellant are narrow spaces. The wall adhesion of the control component in the above was low. From this, it is considered that the pump-type spray products of Comparative Example 1 and Comparative Examples 2, 3, and 6 are not sufficiently effective in controlling pests in a narrow space.

When the pest control quantitative injection aerosol product of Comparative Example 4 having an internal pressure exceeding 0.60 MPa at 25 ° C. and the pest control quantitative injection aerosol product of Comparative Example 5 having an injection capacity of more than 1.0 mL are used in a narrow space. A feeling of irritation was felt, which was not preferable.

(4) Use in a tent A futon is installed in a tent with a volume of 12 m ³ (area 8 m ² , height 1.5 m), and the pest control quantitative injection aerosol product of Example 1 is installed from the entrance at 9:00 pm in the summer. After the injection treatment, I went to bed. I got up at 8 am the next day, but during this time I was not bitten by mosquitoes in the tent. That is, mosquitoes could be controlled for 10 hours or more. In addition, I was able to spend my time comfortably without feeling any irritation such as swelling during my stay in the tent. No stains or stains were found on the futon.

The pest control quantitative injection aerosol product of the present invention and the pest control method can be used for the purpose of controlling pests, particularly mosquitoes, in a narrow space such as an automobile or a tent.

Claims (9)

A quantitative injection aerosol product for pest control for controlling pests in a narrow space with a volume of 2.0 to 18.8 m ^3.
The aerosol stock solution containing the control component and the organic solvent and the propellant are filled in an aerosol container equipped with a fixed-quantity injection valve having an injection capacity of 0.08 to 2.0 mL at one time.
The specific gravity of the aerosol stock solution is 0.76 to 0.95.
In the aerosol container, the volume ratio (a / b) of the aerosol stock solution (a) and the propellant (b) is a / b ≤ 50/50 in terms of volume ratio, and the internal pressure is 0.20 to 0.20 at 25 ° C. A quantitative injection aerosol product for pest control that is set to 0.60 MPa. The quantitative injection aerosol product for pest control according to claim 1, wherein the injection amount of the control component ^{is set to 0.2 to 20.0 mg per volume of 2.0 to 18.8 m 3.} The quantitative injection aerosol product for pest control according to claim 1 or 2, wherein the content of the control component in the aerosol stock solution is 0.2 to 25.0 w / v%. The quantitative injection aerosol product for pest control according to any one of claims 1 to 3, wherein the organic solvent is a lower alcohol having 2 to 3 carbon atoms. The quantitative injection aerosol product for pest control according to any one of claims 1 to 4, wherein the control component contains a pyrethroid compound having a vapor pressure of 2 × 10 ^-4 to 1 × 10 ^{-2 mmHg at 30 ° C.} .. The quantitative injection aerosol product for pest control according to claim 5, wherein the pyrethroid compound is at least one selected from the group consisting of transfluthrin, metoflutrin, and profluthrin. The quantitative injection aerosol product for pest control according to any one of claims 1 to 6, wherein the injection force at an injection distance of 15 cm is set to 3.0 to 20.0 gf. A pest control method using the quantitative injection aerosol product for pest control according to any one of claims 1 to 7.
A pest control method for injecting the quantitative injection aerosol product for pest control in a narrow space ^{having a volume of 2.0 to 18.8 m 3.} The pest control method according to claim 8, wherein the injection direction angle is 30 to 60 ° with respect to the horizontal plane.