JP6888947B2 - Aerosol products and pest control methods - Google Patents

Description

The present invention relates to aerosol products and pest control methods. More specifically, the present invention relates to an aerosol product and a pest control method in which adhesion to an indoor object (for example, cloth products such as curtains, wallpaper, furniture, etc.) is suppressed and the object is less likely to be contaminated.

Conventionally, there are known aerosol products that are sprayed indoors and intended to maintain the pest control effect by adhering a chemical to a wall or the like (see, for example, Patent Document 1).

JP 2015-27982

However, the aerosol product of Patent Document 1 is intended to maintain its effect by adhering it to a wall or the like. Therefore, such aerosol products tend to contaminate walls and the like.

The present invention has been made in view of such conventional problems, and adhesion to indoor objects (for example, cloth products such as curtains, wallpaper, furniture, etc.) is suppressed, and the objects are less likely to be contaminated. It is an object of the present invention to provide aerosol products and pest control methods.

The present inventors have diligently studied the conditions for the injected aerosol composition to be difficult to adhere to the object, and obtained the following findings. That is, the stock solution containing a predetermined insecticidal component and the propellant are mixed so as to have a predetermined ratio, and the particle size of the propelled aerosol composition is adjusted to be equal to or less than the predetermined particle size. The present invention has been completed by finding that the resulting aerosol composition is less likely to adhere to the object and is less likely to contaminate the object. That is, the aerosol product and the pest control method of the present invention that solves the above problems mainly include the following configurations.

(1) An aerosol product in which an aerosol composition containing a stock solution containing an insecticidal component and a propellant is filled to form a nozzle for injecting the aerosol composition, and the insecticidal component is transfluthrin, metoflutrin, and the like. The undiluted solution contains at least one selected from the group consisting of profluthrin and mepafluthrin, and the undiluted solution contains an aerosol solvent containing no solvent or having an octanol / water distribution coefficient Log Pow of 8.0 or less, and the undiluted solution and the undiluted solution. , The blending ratio (volume ratio) with the propellant is 1/99 to 16/84, and 50% average particles based on the volume integration distribution of the propelled aerosol composition at a position 50 cm away from the propellant. An aerosol product having a diameter of 20 μm or less.

(2) The aerosol product according to (1), wherein the specific gravity of the aerosol solvent is 0.77 to 0.90 when the aerosol solvent is contained.

(3) When the aerosol composition is sprayed onto a cotton cloth provided at a position 50 cm away from the nozzle, the amount of the aerosol composition adhered to the cloth among the sprayed aerosol compositions. The aerosol product according to (1) or (2), wherein is less than 10% by mass.

(4) The aerosol composition is sprayed into a room by using an aerosol product in which an aerosol composition containing a stock solution containing an insecticidal component and a propellant is filled and a nozzle for injecting the aerosol composition is formed. A pest control method, wherein the insecticidal component contains at least one selected from the group consisting of transfluthrin, metoflutrin, profluthrin, mepafluthrin, and the stock solution is solvent-free or has an aerosol / water partitioning coefficient. The blending ratio (volume ratio) of the stock solution and the propellant containing an aerosol solvent having a Log Pow of 8.0 or less is 1/99 to 16/84, and is located at a position 50 cm away from the nozzle. A pest control method in which the 50% average particle size based on the volume integration distribution of the discharged aerosol product is 20 μm or less.

(5) The pest control method according to (4), which comprises spraying a plurality of times.

(6) When the aerosol composition is sprayed onto a cotton cloth provided at a position 50 cm away from the nozzle, the amount of the aerosol composition adhered to the cloth among the sprayed aerosol compositions. Is less than 10% by mass, according to (4) or (5).

According to the present invention, it is possible to provide an aerosol product and a pest control method in which adhesion to an indoor object (for example, cloth products such as curtains, wallpaper, furniture, etc.) is suppressed and the object is less likely to be contaminated.

<Aerosol products>
The aerosol product of one embodiment of the present invention is an aerosol product in which an aerosol composition containing a stock solution containing an insecticidal component and a propellant is filled to form a nozzle for injecting the aerosol composition. The stock solution contains no solvent or contains an aerosol solvent having an octanol / water partition coefficient Log Pow of 8.0 or less. The mixing ratio (volume ratio) of the stock solution and the propellant is 1/99 to 16/84. The 50% average particle size based on the volume integration distribution of the injected aerosol composition at a position 50 cm away from the nozzle is adjusted to be 20 μm or less. Each configuration will be described below. The aerosol product of the present embodiment has a 50% average particle size based on the type of insecticidal component, the presence / absence and type of solvent, the mixing ratio of the undiluted solution and the propellant, and the volume integration distribution of the sprayed aerosol composition. It is characterized in that it is adjusted to have the above-mentioned specific type and range. Therefore, other configurations (for example, the shape of the aerosol product, other components and blending amounts, various physical properties such as the internal pressure of the container, etc.) are not particularly limited as long as they satisfy the above range. Therefore, among the following detailed explanations, the 50% average particle size based on the type of insecticidal component, the presence / absence and type of solvent, the mixing ratio of the undiluted solution and the propellant, and the volume integration distribution of the sprayed aerosol composition is determined. All are examples, except that they are adjusted to the specific types and ranges described above.

In the present embodiment, the objects are cloth products such as curtains provided in the room, various wallpapers, furniture and the like. In the aerosol product of the present embodiment, the injected aerosol composition is unlikely to adhere to these objects. Therefore, the sprayed aerosol composition is less likely to adhere to, for example, curtains and wallpaper, and is less likely to contaminate the object. In addition, the aerosol composition that did not adhere tends to continue to float in the room as a result. The floating aerosol composition is appropriately diffused indoors, and can exhibit a wide range of medicinal effects (insecticidal effect, pest control effect) for a long period of time. The form and material of cloth products such as curtains are not particularly limited. As an example, the form of the cloth product may be a woven fabric, a knitted fabric, a lace, a felt, a non-woven fabric or the like. The material of the cloth product may be various natural fibers (cotton, silk, linen, etc.), recycled fibers (acetate, cupra, rayon, etc.), synthetic fibers (nylon, polyurethane, polyester, etc.). The material of the wallpaper is not particularly limited. As an example, the material of the wallpaper may be various Japanese paper, synthetic resin, or the like. The material of the furniture is not particularly limited. As an example, the material of the furniture may be various kinds of wood, and may be oil-finished, wax-finished, resin-coated or the like. Among these objects, the aerosol composition of the present embodiment is difficult to adhere to, especially when it is a cloth product (made of cotton, polyester, rayon).

(Stock solution)
-Insecticidal component The insecticidal component is a content to be filled in an aerosol container as a stock solution, and contains at least one selected from the group consisting of transfluthrin, metoflutrin, profluthrin, and mepafluthrin. These pesticides include, for example, cockroaches such as Smokybrown cockroach, Chabanegokiburi, Yamato cockroach, American cockroach, Brown cockroach, spider, mukade, ant, geji, yasude, dangomushi, warajimushi, white ant, chemushi, tick, flea, tokojirami, shirami, etc. Flying pests such as cockroach pests, mosquitoes, flies, moths, bees, turtles, cockroaches, cockroaches, cockroaches, cockroaches, and cockroaches can be suitably controlled. Among these, the insecticidal component preferably contains transfluthrin because it has a high insecticidal effect and a low adhesion rate to the object.

The content of the insecticidal component is not particularly limited. As an example, the content of the insecticidal component is preferably 0.5 w / v% or more, and more preferably 1.0 w / v% or more in the aerosol composition. On the other hand, the content of the insecticidal component is preferably less than 10 w / v%, more preferably 8 w / v% or less in the aerosol composition. If the content of the insecticidal component is less than 0.5 w / v%, the aerosol product may not be able to fully exert its insecticidal effect. On the other hand, when the content of the insecticidal component is 10 w / v% or more, the aerosol product tends to have a greater decrease in usability than an expected increase in efficacy.

-Solvent stock solution contains no solvent or contains an aerosol solvent having an octanol / water partition coefficient Log Pow of 8.0 or less. The solvent is appropriately contained, for example, in order to uniformly blend the insecticidal component.

The aerosol product of the present embodiment was injected only when it did not contain a solvent, or when it contained a solvent and contained an aerosol solvent having an octanol / water partition coefficient Log Pow of 8.0 or less. Adhesion of the aerosol composition to the object can be suppressed. Due to the inclusion of the aerosol solvent, the insecticidal component is likely to be uniformly blended in the aerosol composition. In the present embodiment, when the injected aerosol composition can be suppressed from adhering to the object by containing an aerosol solvent having an octanol / water partition coefficient Log Pow of 8.0 or less. As long as it is limited, a solvent other than the aerosol solvent having an octanol / water partition coefficient Log Pow of 8.0 or less (a solvent having an octanol / water partition coefficient Log Pow exceeding 8.0) may be contained.

The aerosol solvent is not particularly limited as long as the octanol / water partition coefficient Log Pow is 8.0 or less. As an example, the aerosol solvent is ethanol (Log Pow = 0.32), isopropyl alcohol (IPA) (Log Pow = 0.05), isopropyl myristate (IPM) (Log Pow = 7.43), ethylene glycol. Monomethyl ether acetate (Log Pow = 0.121), propylene glycol monomethyl ether (Log Pow = 0.3), propylene glycol diacetate (Log Pow = 0.8) and the like. Among these, the aerosol solvent is preferably isopropyl alcohol, ethanol and isopropyl myristate, preferably isopropyl alcohol and ethanol, from the viewpoint of more easily suppressing the adhesion of the injected aerosol composition to the object. More preferred. The "octanol / water partition coefficient Log Pow" is a coefficient indicating the affinity of the organic compound for water and 1-octanol. The 1-octanol / water partition coefficient P is the distribution equilibrium when a trace amount of the compound is dissolved as a solute in a two-component solvent of 1-octanol and water, and is the ratio of the equilibrium concentrations of the compounds in each solvent. , Generally expressed in the form of their log LogPow with respect to the base 10. Representative LogPower can be obtained from, for example, Daylight Chemical Information Systems, Inc. (Daylight CIS).

When the aerosol solvent is contained, the specific gravity of the aerosol solvent is preferably 0.77 or more, more preferably 0.78 or more at 20 ° C. The specific gravity of the aerosol solvent is preferably 0.90 or less, more preferably 0.88 or less. When the aerosol solvent is contained, the injected aerosol composition is less likely to adhere to the object because the aerosol solvent having a specific gravity of 0.77 to 0.90 is blended.

When the aerosol solvent is contained, the content of the aerosol solvent is preferably 99% by volume or less, more preferably 80% by volume or less in the stock solution. Within the above range, the aerosol solvent does not interfere with the effect of the aerosol product, and it is easy to uniformly mix the insecticidal component.

-Arbitrary component The stock solution may contain an optional component as appropriate in addition to the insecticidal component. For example, other components include insecticidal components other than the above, nonionic, anionic or cationic surfactants, antioxidants such as butylhydroxytoluene; stabilizers such as citric acid and ascorbic acid; talc, Inorganic powders such as citric acid, bactericides (antifungal agents), deodorants, fragrances (fragrances), pigments and the like. Insecticide components other than the above include peppermint oil, orange oil, pyrethroid oil, kehi oil, butterfly oil, television oil, eucalyptus oil, hiba oil, jasmine oil, neroli oil, peppermint oil, bergamot oil, butiglen oil, lemon oil, Lemongrass oil, cinnamon oil, citronella oil, geranium oil, citral, l-menthol, citronellyl acetate, synamic aldehyde, terpineol, nonyl alcohol, cis-jasmon, limonene, linalol, 1,8-cineole, geraniol, α-pinene , P-menthan-3,8-diol, eugenol, menthyl acetate, timole, benzyl benzoate, benzyl salicylate and other insecticidal essential oil components, propylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monopropyl ether , Dipropylene glycol monobutyl ether, dipropylene glycol dimethyl ether, ethylene glycol monoisobutyl ether, diethylene glycol monoisobutyl ether, diethylene glycol dibutyl ether, diethylene glycol dimethyl ether, glycol ethers such as triethylene glycol dimethyl ether, dibasic acid esters such as dibutyl adipate , Pyrethroids, Areslin, Phthalthrin, Resmethrin, Flametrin, Fenotrin, Permethrin, Empentrin, Praletrin, Ciphenothrin, Imiprothrin, Transfluthrin, Metofurthrin and other pyrethroid compounds, Fenitrothione, Dichlorvos, Chlorpyriphosmethyl, Diadinone Examples thereof include compounds, carbamate compounds such as carbalyl and propoxul, and insecticidal compounds such as metoprene, pyriproxyfen, methoxadiazone, fipronil and amidoflumeth.

-Injector The propellant is a content that is pressure-filled in an aerosol container together with the undiluted solution. The injection agent is injected together with the aerosol composition from the injection button of the injection button described later by operating the valve mechanism described later. At that time, the propellant imparts a propulsive force when injecting the aerosol composition, and at the same time, the aerosol composition is made into fine particles.

The type of propellant is not particularly limited. As an example, the propellant is a liquefied gas. Examples of the liquefied gas include liquefied petroleum gas, propane, normal butane, isobutane, normal pentane, isopentane and other aliphatic hydrocarbons having 3 to 5 carbon atoms, and trans-1,3,3,3-tetrafluoropropa-1-. Examples thereof include hydrofluoroolefins such as ene, trans-2,3,3,3-tetrafluoropropa-1-ene, dimethyl ether and mixtures thereof. As the liquefied gas, a compressed gas may be used in combination. Examples of the compressed gas include nitrogen gas, carbon dioxide gas, nitrous oxide gas, and compressed air.

The filling amount of the liquefied gas is not particularly limited. As an example, the filling amount of the liquefied gas is 20 to 99% by mass with respect to the total of the stock solution and the propellant. The filling amount of the liquefied gas is preferably an amount such that the pressure in the aerosol container at 25 ° C. is 0.1 to 0.7 MPa. When the filling amount of the liquefied gas is less than 20% by mass or the pressure is less than 0.1 MPa, the aerosol composition may cause dripping or the like and impair the commercial value. On the other hand, when the filling amount of the liquefied gas exceeds 99% by mass, or when the pressure exceeds 0.7 MPa, the contents of the aerosol composition tend to leak from the container.

When a compressed gas is used together as the propellant, the filling amount of the compressed gas is not particularly limited. As an example, the filling amount of the compressed gas is an amount at which the pressure in the aerosol container at 25 ° C. is 0.1 to 1.0 MPa. When the filling amount is such that the pressure is less than 0.1 MPa, the aerosol composition tends not to sufficiently diffuse the drug. On the other hand, when the filling amount is such that the pressure exceeds 1.0 MPa, the contents of the aerosol composition tend to leak from the container.

Returning to the description of the entire aerosol product, the mixing ratio (volume ratio) of the stock solution and the propellant may be 1/99 to 16/84. If the blending ratio of the undiluted solution is less than 1% by volume, the pest control effect of the insecticidal component may be insufficient. On the other hand, when the blending ratio of the undiluted solution exceeds 16% by volume, the injected aerosol composition tends to be difficult to suppress adhesion to an object such as a wall.

(Aerosol container)
The aerosol container is a container for pressurizing and filling the aerosol composition. The aerosol container is not particularly limited. As an example, the aerosol container is a substantially cylindrical pressure-resistant container having an opening formed at the top. The opening is a filling port for filling the aerosol composition, and is closed by a valve mechanism described later after being filled with the undiluted solution.

The material of the aerosol container is not particularly limited. For example, the material of the aerosol container is a metal such as aluminum or tin, a synthetic resin such as polyethylene terephthalate, and pressure-resistant glass.

-Valve mechanism The valve mechanism is a mechanism for taking out the aerosol composition filled in the aerosol container, and is attached to the opening of the aerosol container to close the opening.

-Stem mechanism The stem mechanism is a part attached to the valve mechanism, and has an internal passage for sending the undiluted solution and the propellant taken into the valve mechanism to the injection button described later. The internal passage is appropriately opened and closed by the stem rubber of the stem mechanism.

-Injection button The injection button is a member for injecting the undiluted solution taken in from the aerosol container via the stem mechanism by the valve mechanism together with the propellant. The injection button is formed with a nozzle for injecting the aerosol composition.

In the aerosol product of the present embodiment, when the injection button is operated by the user, the stem mechanism and the valve mechanism are operated, and the inside and the outside of the aerosol container communicate with each other. As a result, the aerosol composition in the aerosol container is taken out from the aerosol container according to the pressure difference between the inside and the outside of the aerosol container, and is injected from the injection port of the injection member. The aerosol composition is appropriately adjusted to have a predetermined particle size and is injected.

_{The aerosol composition injected by the aerosol product of the present embodiment is adjusted so that the 50% average particle diameter r 50} based on the volume integration distribution at a position 50 cm away from the injection port is 20 μm or less. The average particle size of the injected aerosol composition can be measured using, for example, a laser light diffraction type particle size measuring device (LDSA-1400A manufactured by Microtrac Bell Co., Ltd.).

Further, when the aerosol composition is sprayed onto a cotton cloth provided at a position 50 cm away from the nozzle, the amount of the aerosol composition adhered to the cloth (50 cm adhesion rate) among the sprayed aerosol compositions. ) Is preferably less than 10% by mass, more preferably 8% by mass or less. In the present embodiment, the 50 cm adhesion rate is adjusted to 25 ° C. on a cotton cloth (dimensions: 15 cm × 15 cm) provided at a position 50 cm away from the nozzle, and the aerosol composition is injected 5 times ( One injection amount: 0.2 cc), put the cloth after injection in a glass bottle container (volume: 140 mL), add the internal standard substance and acetone, extract the attached drug, quantify by gas chromatography, and inject. It can be calculated as a ratio to the amount.

The method for producing the aerosol product of the present embodiment is not particularly limited. As an example, an aerosol product can be produced by filling an aerosol container with a stock solution, closing the opening of the aerosol container by a valve mechanism, and pressurizing and filling an propellant through a stem mechanism. As an example, the injection button may be a trigger button, a push-down button, or the like. The size of the injection port of these injection buttons may be φ0.1 to 2.0 mm, and the number of injection ports may be plurality.

As described above, according to the aerosol product of the present embodiment, the sprayed aerosol composition suppresses adhesion to indoor objects (for example, cloth products such as curtains, wallpaper, furniture, etc.) and contaminates the objects. Hateful.

<Pest control method>
The pest control method of the embodiment of the present invention uses an aerosol product in which an aerosol composition containing a stock solution containing an insecticidal component and an propellant is filled to form an aerosol composition for injecting the aerosol composition. This is a method of spraying an object indoors. The insecticidal component comprises at least one selected from the group consisting of transfluthrin, metoflutrin, profluthrin, mepafluthrin. The stock solution contains no solvent or contains an aerosol solvent having an octanol / water partition coefficient Log Pow of 8.0 or less. The mixing ratio (volume ratio) of the stock solution and the propellant is 1/99 to 16/84. The 50% average particle size based on the volume integration distribution of the injected aerosol composition at a position 50 cm away from the nozzle is adjusted to be 20 μm or less.

In carrying out the pest control method of the present embodiment, the aerosol composition and the aerosol product containing the aerosol component may be the same as those described in the above-described embodiment.

In the present embodiment, the number of injections is not particularly limited. The number of injections may be one or a plurality of times. When the number of injections is a plurality of times, the aerosol product can, for example, reduce the amount of one injection to a small amount, so that adhesion to the object can be further suppressed. Further, by injecting little by little, as a result, the proportion of the aerosol composition that can float in the room can be increased, and the medicinal effect (insecticidal effect, pest control effect) can be easily exhibited for a long period of time.

Further, in the present embodiment, the amount of the aerosol composition adhered to the cloth (50 cm adhesion rate) among the sprayed aerosol compositions with respect to the cotton cloth provided at a position 50 cm away from the nozzle is 10. It can be injected to be less than% by mass.

As described above, according to the pest control method of the present embodiment, the aerosol composition is less likely to adhere to an indoor object (for example, cloth products such as curtains, wallpaper, furniture, etc.) and is less likely to contaminate the object. Further, as a result, the aerosol composition that has not adhered tends to continue to float in the room. The floating aerosol composition is appropriately diffused indoors, and can exhibit a wide range of medicinal effects (insecticidal effect, pest control effect) for a long period of time.

Hereinafter, the present invention will be described in more detail with reference to Examples. The present invention is not limited to these examples.

<Aerosol products>
Details of the aerosol products used are shown below.
Injection button: Made by Mitani Valve Co., Ltd. (Product number: P94W W0668D "3"), Injection port diameter: φ0.5mm, Single discharge amount: Approximately 0.2cc)

(Example 1)
After filling 100 parts by mass of transfluthrin (stock solution) in an aerosol container with a capacity of 59 mL and attaching a valve, the mixing ratio (volume ratio) of the stock solution and the propellant is 1.4 / 98.6. Liquefied petroleum gas (mixture of propane, isobutane and normal butane, saturated vapor pressure: 0.49 MPa (25 ° C.)) was pressure-filled to prepare an aerosol product.

(Example 2)
After filling 100 parts by mass of transfluthrin together with 100 parts by mass of isopropyl alcohol (IPA) into an aerosol container having a capacity of 59 mL (stock solution) so that the concentration in the stock solution becomes 50% by weight / volume%, and attaching the valve. Liquefied petroleum gas (mixture of propane, isobutane and normal butane, saturated vapor pressure: 0.49 MPa (25 ° C)) was pressurized and filled so that the mixing ratio (volume ratio) of the stock solution and the propellant was 10/90. An aerosol product was made.

(Examples 3 to 6 and Comparative Examples 1 to 5)
An aerosol product was produced by the same method as in Example 2 except that the type of the aerosol solvent used or the mixing ratio of the undiluted solution and the propellant was changed to be the type and the mixing ratio shown in Table 1. ..

(Comparative Examples 6 to 7)
An aerosol product was prepared by the same method as in Example 2 except that the type of insecticidal component used was changed to the type shown in Table 2.

For the obtained aerosol products of Examples 1 to 6 and Comparative Examples 1 to 7, the 50% average particle size and the adhesion rate based on the volume integration distribution were measured according to the following evaluation methods. The results are shown in Table 1 or Table 2.

<50% average particle size>
The injection product was held at 25 ° C., and the 50% average particle size based on the volume integration distribution was measured using a laser light diffraction type particle size measuring device (LDSA-1400A Microtrack Bell Co., Ltd.). For the measurement, the average particle size of the aerosol composition was measured by injecting once at a position 50 cm from the nozzle. The measurement was performed 5 times, and the average of 3 points excluding the maximum value and the minimum value was calculated. The results are shown in Table 1 or Table 2.

<Adhesion rate>
The sprayed product was held at 25 ° C., and the aerosol composition was sprayed 5 times on a cotton cloth (dimensions: 15 cm × 15 cm) provided at a position 50 cm away from the jet port, and the cloth after spraying was placed in a glass bottle. It was placed in a container (volume: 140 mL), an internal standard substance and acetone were added, and the attached drug was extracted, quantified by gas chromatography, and calculated as a ratio to the injection amount.

As shown in Table 1, a solvent having no solvent or having an octanol / water partition coefficient Log Pow of 8.0 or less was used when the solvent was contained, and the mixing ratio (volume) of the stock solution and the propellant was used. The ratio) was in the range of 1/99 to 16/84, and the 50% average particle size based on the volume integration distribution of the injected aerosol composition was 20 μm or less at a position 50 cm away from the injection port. The aerosol products of Examples 1 to 6 had an adhesion rate of less than 10% to the object.

On the other hand, the aerosol product of Comparative Example 1 using a solvent having an octanol / water partition coefficient Log Pow of more than 8.0 had a high adhesion rate to the object of 10% or more. Further, the aerosol products of Comparative Examples 2 to 5 in which the mixing ratio (volume ratio) of the undiluted solution and the propellant exceeded the range of 1/99 to 16/84 had a high adhesion rate of 10% or more to the object. It was.

As shown in Table 2, the aerosol products of Comparative Examples 6 to 7 using a compound other than the compound represented by the formula (1) as an insecticidal component had a 50% average particle size of 20 μm or less based on the volume integration distribution. However, the adhesion rate to the object was 10% or more, which was high.

Claims (5)

An aerosol product in which an aerosol composition containing a stock solution containing an insecticidal component and a propellant is filled to form a nozzle for injecting the aerosol composition.
The stock solution contains an aerosol solvent having an octanol / water partition coefficient Log Pow of 8.0 or less.
The insecticidal component comprises at least one selected from the group consisting of transfluthrin, metoflutrin, profluthrin, mepafluthrin.
The blending ratio (volume ratio) of the stock solution and the propellant is 1/99 to 16/84.
The 50% average particle size based on the volume integration distribution of the injected aerosol composition at a position 50 cm away from the nozzle is 20 μm or less.
The aerosol solvent contains at least one of isopropyl alcohol, ethanol and isopropyl myristate.
The concentration of the insecticidal component is 50% by weight / volume% or more in the undiluted solution.
When the aerosol composition is sprayed onto a cotton cloth provided at a position 50 cm away from the nozzle, the amount of the aerosol composition adhered to the cloth among the sprayed aerosol compositions is 10. Aerosol products that are less than% by weight. The aerosol solvent of isopropyl alcohol or ethanol, containing at least one, aerosol product according to claim 1, wherein. A pest control method in which an aerosol composition containing a stock solution containing an insecticidal component and an propellant is filled and an aerosol product having a nozzle for injecting the aerosol composition is used to spray the aerosol composition indoors. And
The insecticidal component comprises at least one selected from the group consisting of transfluthrin, metoflutrin, profluthrin, mepafluthrin.
The stock solution contains an aerosol solvent having an octanol / water partition coefficient Log Pow of 8.0 or less.
The blending ratio (volume ratio) of the stock solution and the propellant is 1/99 to 16/84.
The 50% average particle size based on the volume integration distribution of the discharged aerosol product at a position 50 cm away from the nozzle is 20 μm or less.
The aerosol solvent contains at least one of isopropyl alcohol, ethanol and isopropyl myristate.
The concentration of the insecticidal component is 50% by weight / volume% or more in the undiluted solution.
When the aerosol composition is sprayed onto a cotton cloth provided at a position 50 cm away from the nozzle, the amount of the aerosol composition adhered to the cloth among the sprayed aerosol compositions is 10. An aerosol control method that is less than% by mass. The pest control method according to claim 3 , wherein the aerosol solvent contains at least one of isopropyl alcohol and ethanol. The pest control method according to claim 3 or 4, wherein the pests are sprayed a plurality of times.