Aerosol for pest control and method for controlling pests

Abstract

The present invention provides a quantitative spray type aerosol for use in spatial treatment, which offers improved control efficacy against crawling insects. [Solution] The vapor pressure at 30°C is 1.5 × 10 -3 An aerosol for pest control comprising an aerosol concentrate containing an insecticidal component and a solvent with a specific gravity of less than mmHg, and a propellant, filled into an aerosol container equipped with a metering valve, wherein the aerosol concentrate has a specific gravity of 0.82 to 1.25 at 20°C and a viscosity of η at 10°C. 10 The viscosity is 3.2 to 60.0 mPa·s, and the viscosity at 30°C is η 30 and viscosity η at 10°C 10 The ratio η 30 / η 10 The aerosol for pest control has a ratio of 0.40 to 0.92, and the metered spray valve has a spray volume of 0.1 to 3.0 mL per spray.

Description

[Technical Field]

[0001] The present invention relates to an aerosol for pest control, comprising an aerosol concentrate containing an insecticidal component and a solvent, and a propellant, filled into an aerosol container equipped with a metering spray valve, and a method for pest control using the said aerosol. [Background technology]

[0002] For insecticides targeting crawling insects such as cockroaches and bed bugs that roam floors and walls, the most common types applied to areas where these insects live or travel along are (1) fumigants, (2) full-volume spray aerosols, (3) topical aerosols, and (4) baits, each with its own unique characteristics in terms of formulation.

[0003] (1) Fumigants and (2) full-volume spray aerosols are methods that release the chemical into every corner of a room at once, and then seal the room for a set period of time to increase the chemical concentration. Since people cannot enter the room during this time, they fall under the category of pharmaceuticals. These formulations are characterized by their so-called spatial treatment, which provides a high extermination effect against crawling insects throughout the entire treated space due to the released chemical. However, these formulations require the protection of electrical appliances and tableware before treatment, and cleaning of the sprayed sediment after treatment, and require special attention to the safety of the chemicals, so they cannot be said to be formulations that can be easily and frequently used.

[0004] On the other hand, (3) surface-applied aerosols and (4) spot-applied baits are classified as quasi-drugs with milder effects on the human body and are easier to use than (1) fumigants and (2) full-volume spray aerosols. However, because they do not treat the entire space, the efficiency of contact between the pesticide and the insects is inferior, and they do not necessarily provide an efficient method of extermination.

[0005] Thus, conventionally, it has been considered difficult to develop a pest control agent for creeping insects that is a spatial treatment but falls under the category of a quasi-drug.

[0006] The inventors of the present invention, in developing a space treatment agent for crawling insects that falls under the category of quasi-drugs, diligently studied to develop a formulation that would provide sufficient control for practical use when sprayed using a metered-dose aerosol, rather than formulations such as (1) fumigants or (2) full-volume spray aerosols, and that would be highly safe and usable even in situations where people are present. As a result, they invented a method for controlling insects and mites that is effective not only against crawling insects but also against flying insects on the day of spraying (see Patent Document 1). [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2011-63576 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] The pest and mite control method described in Patent Document 1 aims to achieve practical extermination effects not only against crawling insects but also against flying insects, and is highly practical. In this pest and mite control method, the spray characteristics of the aerosol are such that the sprayed particles after spraying are formed into floating particles and adhesive particles that adhere to walls and other surfaces and settle on floors. The inventors have diligently studied how to further improve the control effect against crawling insects, particularly cockroaches, in a quantitative spray type aerosol used for spatial treatment.

[0009] During our investigation, we concluded that in order to enhance the control effect against crawling insects, particularly cockroaches, in spatial treatment, it is important to prioritize adhesive particles even more than the spraying characteristics described in Patent Document 1, to increase the proportion of particles that settle on the floor surface rather than those that adhere to the wall surface, and to ensure that the particles adhere uniformly to the entire floor surface.

[0010] After being sprayed, the temperature of the aerosol stock solution decreases due to the heat of vaporization of the propellant. The present inventors have found that the viscosity change due to this temperature, that is, the viscosity ratio of the aerosol stock solution depending on the temperature, is an important factor in determining the behavior of the adhering particles related to sedimentation, and as a result of repeated trial and error and repeated testing, the inventors have specified the specific gravity of the aerosol stock solution and the viscosity ratio depending on the temperature within an optimal range, thereby completing the present invention.

[0011] An object of the present invention is to provide a metered-injection type aerosol for space spraying, which is a pest control aerosol having an improved control effect against crawling pests, and further to provide a pest control method using the pest control aerosol.

Means for Solving the Problems

[0012] The characteristic configuration of the pest control aerosol according to the present invention for solving the above problems is An aerosol stock solution containing an insecticidal component and a solvent having a vapor pressure of less than 1.5×10 10 mmHg at 30°C and a propellant are filled in an aerosol container equipped with a metered-injection valve, and the pest control aerosol is The aerosol stock solution has a specific gravity of 0.82 to 1.25 at 20°C, a viscosity η 10 of 3.2 to 60.0 mPa·s at 10°C, and a viscosity η 30 at 30°C and a viscosity η 10 at 10°C and the ratio η 30 / η 10 is 0.40 to 0.92, The metered-injection valve has an injection volume of 0.1 to 3.0 mL per injection.

[0013] According to the pest control aerosol of this configuration, the specific gravity of the aerosol stock solution at 20°C, the viscosity η 10 at 10°C, and the viscosity η 30 at 30°C and the ratio η 10 of the viscosity η 30 / η 10Because the above range is maintained, the viscosity of the aerosol concentrate does not change rapidly due to temperature changes caused by the heat of vaporization of the propellant after spraying the aerosol, allowing the sprayed particles to settle quickly while properly diffusing. As a result, the insecticidal components contained in the sprayed particles adhere to the entire floor surface, providing excellent control against crawling insects such as cockroaches and bed bugs. Furthermore, because the spray volume per spray of the metered spray valve is within the above range, the amount of insecticidal components released is appropriate by spraying the aerosol concentrate one to several times, providing practically sufficient control against crawling insects such as cockroaches and bed bugs.

[0014] In the aerosol for pest control according to the present invention, Let p be the specific gravity of the aerosol concentrate at 20°C, and let η be the ratio. 30 / η 10 When we let q be (p)·(q) 2 It is preferable that the value is between 0.17 and 1.00.

[0015] In this aerosol for pest control, the specific gravity of the aerosol concentrate at 20°C is p, and the ratio η is... 30 / η 10 When we let q be (p)·(q) 2 By setting the above range, the spray particles formed by the aerosol spray have improved diffusivity and settling properties, and as a result, the insecticidal components contained in the spray particles can adhere uniformly to the entire floor surface. Therefore, (p)·(q) 2 By preparing the aerosol concentrate using the parameters represented by [the given formula] as indicators, it becomes possible to design a metered-dispense aerosol for pest control that exhibits superior pest control effects on spaces and floors, which was previously only achievable with fumigants or full-volume spray aerosols.

[0016] In the aerosol for pest control according to the present invention, The insecticidal component preferably contains transfluthrin and / or metofluthrin.

[0017] This aerosol for pest control contains transfluthrin and / or metofluthrin as insecticidal components, which provides excellent control against crawling insects such as cockroaches and bed bugs.

[0018] In the aerosol for pest control according to the present invention, It is preferable to target creeping insects for control.

[0019] This aerosol for pest control has excellent diffusion and settling properties for the spray particles formed by spraying, allowing the insecticidal components contained in the spray particles to adhere to the entire floor surface. As a result, it can exhibit excellent control effects against crawling pests such as cockroaches and bed bugs that roam the floor.

[0020] The characteristic configuration of the pest control method according to the present invention, which solves the above problems, is as follows: The vapor pressure at 30°C is 1.5 × 10⁻⁶ -3 A pest control method comprising spraying an aerosol containing an insecticidal component and a solvent with a concentration of less than mmHg, and a propellant, in an aerosol container equipped with a metering spray valve, The aerosol concentrate has a specific gravity of 0.82 to 1.25 at 20°C and a viscosity of η at 10°C. 10 The viscosity is 3.2 to 60.0 mPa·s, and the viscosity at 30°C is η 30 and viscosity η at 10°C 10 The ratio η 30 / η 10 The values ​​are 0.40 to 0.92. The aforementioned quantitative injection valve has an injection volume of 0.1 to 3.0 mL per injection. The method involves spraying the aforementioned pest control aerosol into the air indoors.

[0021] According to this pest control method, the specific gravity of the aerosol concentrate at 20°C and the viscosity at 10°C η 10 , and viscosity η at 30°C 30 and viscosity η at 10°C 10 The ratio η 30 / η 10 Because the above range is maintained, when the pest control aerosol is sprayed into the air indoors, the viscosity of the aerosol concentrate does not change rapidly due to temperature changes caused by the heat of vaporization of the propellant, etc., so that the sprayed particles disperse appropriately and settle quickly. As a result, the insecticidal components contained in the sprayed particles adhere to the entire floor surface, exhibiting excellent control effects against crawling pests such as cockroaches and bed bugs. Furthermore, because the spray volume per spray of the metered spray valve is within the above range, the amount of insecticidal components released is appropriate by spraying the aerosol concentrate one to several times, and it is possible to exhibit a practically sufficient control effect against crawling pests such as cockroaches and bed bugs. [Modes for carrying out the invention]

[0022] The aerosol for pest control and the pest control method of the present invention will be described below. However, the present invention is not intended to be limited to the configuration described below.

[0023] [Aerosol for pest control] The pest control aerosol of the present invention is a metered-dose spray type aerosol used to control crawling insects by spatial treatment, and is composed of an aerosol concentrate containing an insecticidal component and a solvent, and a propellant, which are filled into an aerosol container equipped with a metered-dose spray valve.

[0024] <Aerosol concentrate> In the aerosol for pest control of the present invention, the viscosity of the aerosol concentrate at 10°C η 10 The viscosity is adjusted to 3.2 to 60.0 mPa·s, preferably to 4.0 to 20.0 mPa·s, and more preferably to 4.0 to 15.0 mPa·s. Also, the viscosity η of the aerosol stock at 30°C is... 30 and viscosity η at 10°C 10 The ratio η 30 / η 10 The viscosity η is adjusted to 0.40-0.92, preferably 0.60-0.90. 10 , and ratio η 30 / η 10If the viscosity is within the above range, the viscosity of the aerosol concentrate will not change rapidly due to temperature changes. Therefore, when a certain amount of the pest control aerosol of the present invention is sprayed in an indoor treatment space, the spray particles will disperse appropriately and settle quickly. As a result, the insecticidal components contained in the spray particles adhere to the entire floor surface, exhibiting excellent control effects against crawling insects such as cockroaches and bed bugs. Viscosity η 10 If the ratio η falls outside the above range, the temperature of the aerosol concentrate will decrease after spraying due to the heat of vaporization of the propellant, etc., and spray particles with sufficient diffusivity and settling properties will not be formed. As a result, the amount of insecticide adhering to the floor surface may be insufficient, or there may be a significant unevenness in the adhesion of the insecticide. 30 / η 10 If the ratio falls below 0.40, there is a risk that the diffusion of the sprayed particles will be insufficient, and the ratio η 30 / η 10 If the viscosity η exceeds 0.92, there is a risk that sufficient control effects against crawling insects such as cockroaches and bed bugs may not be obtained. 30 The viscosity of the aerosol concentrate is preferably adjusted to 2.0 to 26.0 mPa·s, more preferably to 2.5 to 20.0 mPa·s, and even more preferably to 3.0 to 15.0 mPa·s. 10 and η 30 This can be measured using a viscometer. In this embodiment, the aerosol concentrate in a beaker was adjusted to 10°C or 30°C in a constant temperature water bath (manufactured by IWAKI), and the viscosity at each temperature was measured using a Type B viscometer (manufactured by Tokyo Keiki Co., Ltd., rotor No. 1) (measurement conditions: 60 rpm, 30 seconds).

[0025] In the pest control aerosol of the present invention, the specific gravity of the aerosol concentrate at 20°C is adjusted to 0.82 to 1.25, preferably to 0.83 to 1.20, and more preferably to 0.85 to 1.05. The specific gravity of the aerosol concentrate can be adjusted by changing the mixing ratio of the insecticidal component and the solvent, or by adding other components. When the specific gravity of the aerosol concentrate at 20°C is in the range of 0.82 to 1.25, spraying a certain amount of the pest control aerosol of the present invention in an indoor treatment space causes the insecticidal component to diffuse and adhere almost uniformly to the entire floor surface, providing excellent control effects against crawling pests such as cockroaches and bed bugs, and flying pests such as mosquitoes and flies in an indoor space, and particularly excellent control effects against crawling pests such as cockroaches and bed bugs. In this specification, the term "control effect" refers to both the extermination effect based on knockdown and lethal effects, as well as the repellent effect. In many cases, even if the extermination effect is low, sufficient repellent effect can be practically used to achieve control. Furthermore, if the specific gravity of the aerosol concentrate at 20°C is within the above range, the adhesive particles will penetrate into gaps and hidden areas during the process of settling, so if a pyrethroid compound is used as the insecticidal component, a flushing effect that causes cockroaches and other insects to fly out of gaps and hidden areas can be sufficiently expected. If the specific gravity of the aerosol concentrate at 20°C is less than 0.82, there is a risk that the amount of sprayed particles adhering to the floor surface will be insufficient. If the specific gravity of the aerosol concentrate at 20°C exceeds 1.25, there is a risk that the adhesion of the insecticidal component to the floor surface will be uneven.

[0026] Incidentally, the present inventors conducted studies to further improve the pest control effect of aerosols for pest control, and found that when the specific gravity of the aerosol concentrate at 20°C is p, the ratio η 30 / η 10 When we let q be (p)·(q) 2 We have found that by setting the appropriate range, it is possible to perform pest control treatment targeting the entire space and floor surface, similar to conventional fumigants and full-volume spray aerosols, even though it is a quantitative spray type aerosol that does not require special preparation for spatial treatment. In the pest control aerosol of the present invention, (p)·(q) 2However, it is preferable to adjust it to 0.17-1.00, more preferably to 0.17-0.69, even more preferably to 0.40-0.69, and most preferably to 0.55-0.65. (p)·(q) 2 If the ratio is in the range of 0.17 to 1.00, the diffusivity and settling properties of the spray particles formed by the aerosol spray are improved, and as a result, the insecticidal components contained in the spray particles adhere uniformly to the entire floor surface. Therefore, the control effect against crawling insects can be further improved. Thus, the insecticide aerosol of the present invention provides (p)·(q) 2 By preparing the aerosol concentrate using the parameters represented by [specific parameters] as indicators, this product employs a simple metered-dose spray aerosol configuration while exhibiting extremely superior pest control effects on spaces and floors, something previously only achievable with fumigants or full-volume spray aerosols. It can be said to be a groundbreaking product unlike anything before.

[0027] One of the main components of the aerosol concentrate is the insecticidal ingredient, which has a vapor pressure of 1.5 × 10 at 30°C. -3 Insecticides with an Hg level of less than mmHg are used. Specifically, these include pyrethroid compounds such as transfluthrin, metofluthrin, profluthrin, terrarethrin, flamethrin, monfluorothrin, dimefluthrin, mepafluthrin, heptafluthrin, phenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropatrin, tralomethrin, etofenprox, imiprothrin, allethrin, phthalthrin, prallethrin, resmethrin, and natural pyrethrins; silicon compounds such as silafluofen; organophosphorus compounds such as dichlorvos and fenitrothion; carbamate compounds such as propoxur; neonicotinoid compounds such as dinotefuran, imidacloprid, and clothianidin; fipronil, indoxacarb, and methoxadiazone. Considering stability, basic insecticidal efficacy, etc., the vapor pressure at 30°C is 1.0 × 10⁻⁶. -4 mmHg or higher, 1.5 × 10 -3Pyrethroid insecticides with a pH of less than mmHg are preferred, specifically transfluthrin, metofluthrin, and profluthrin. The above insecticides can be used individually or in combination, and it is preferable to use a mixture containing transfluthrin and / or metofluthrin. If optical isomers or geometric isomers based on chiral carbons exist in the acidic or alcoholic portion of the pyrethroid compound, each of them or any mixture thereof is also included in the compound for controlling creeping insects.

[0028] The content of the insecticidal component in the aerosol concentrate is not particularly limited, but is preferably 8-80 w / v%, and more preferably 10-70 w / v%. If the content of the insecticidal component in the aerosol concentrate is within the above range, the specific gravity of the aerosol concentrate at 20°C and the viscosity at 10°C η 10 , and viscosity η at 30°C 30 and viscosity η at 10°C 10 The ratio η 30 / η 10 This allows the range to be set appropriately. As a result, when the aerosol is sprayed, the spray particles are formed in a state suitable for controlling crawling insects through spatial treatment, and an appropriate control effect can be obtained.

[0029] The aerosol concentrate contains a solvent in addition to the insecticidal components mentioned above. The solvent dissolves the insecticidal components to achieve an appropriate specific gravity and ratio η of the aerosol concentrate. 30 / η 10Organic solvents that can be adjusted to the desired state are used. Examples of such organic solvents include lower alcohols with 2 to 3 carbon atoms such as ethanol, n-propanol, and isopropanol (IPA), hydrocarbon solvents such as n-paraffin and isoparaffin, higher fatty acid esters with 16 to 20 carbon atoms such as isopropyl myristate (IPM) and hexyl laurate, glycol ether solvents with 3 to 10 carbon atoms, and ketone solvents. Among these, lower alcohols with 2 to 3 carbon atoms, hydrocarbon solvents, and higher fatty acid esters with 16 to 20 carbon atoms are preferred, lower alcohols with 2 to 3 carbon atoms are more preferred, and ethanol is even more preferred.

[0030] In addition to the above components, the aerosol concentrate may also contain, as appropriate, antifungal agents, antibacterial agents, disinfectants, fragrances, deodorizers, stabilizers, antistatic agents, defoamers, synergists, and excipients targeting molds, fungi, etc. Examples of antifungal agents, antibacterial agents, and disinfectants include hinokitiol, 2-mercaptobenzothiazole, 2-(4-thiazolyl)benzimidazole, 5-chloro-2-methyl-4-isothiazolin-3-one, triforine, 3-methyl-4-isopropylphenol, and orthophenylphenol. Furthermore, examples of fragrances include orange oil, lemon oil, lavender oil, peppermint oil, eucalyptus oil, citronella oil, lime oil, yuzu oil, jasmine oil, cypress oil, green tea essential oil, limonene, α-pinene, linalool, geraniol, phenylethyl alcohol, amyl cinnamic aldehyde, cumin aldehyde, benzyl acetate, and fragrance components containing green leaf alcohol or green leaf aldehyde, which are referred to as "green scents." Examples of synergistic agents include piperonyl butoxide and octyl bicycloheptene dicarboxymide.

[0031] <propellant> Examples of propellants used in the pest control aerosol of the present invention include liquefied petroleum gas (LPG) such as propane, n-butane, and isobutane; liquefied gases such as n-pentane, isopentane, dimethyl ether (DME), and hydrofluoroolefins such as HFO1234ze; and compressed gases such as nitrogen gas, carbon dioxide, nitrous oxide, and compressed air. The above propellants can be used individually or in mixtures, but those mainly composed of LPG are easier to use. It is preferable to use the propellant with the gauge pressure (at 20°C) adjusted to 0.1 to 0.7 MPa.

[0032] The volume ratio (a) / (a+b) of the aerosol concentrate (a) and propellant (b) filled into the aerosol container is preferably adjusted to 0.02 to 0.5 by volume, more preferably to 0.05 to 0.5, and even more preferably to 0.1 to 0.4. If the volume ratio (a) / (a+b) is within the above range, a sufficient amount of insecticide can be uniformly diffused over the entire floor surface.

[0033] The pest control aerosol of the present invention has a metered spray valve with a single spray volume set to 0.1 to 3.0 mL, preferably 0.2 to 1.0 mL, and more preferably 0.2 to 0.9 mL. When the spray volume is within the above range, spraying the pest control aerosol once or several times releases an amount of insecticidal component, for example, 0.1 to 50 mg / m³. 3 The degree of control becomes appropriate, and a practically sufficient control effect against creeping insects is obtained in the treated area.

[0034] The pest control aerosol of the present invention is preferably set to have a spray force of 3 to 50 gf at a distance of 5 cm from the nozzle, more preferably 5 to 40 gf, and even more preferably 10 to 35 gf. If the spray force is 3 to 50 gf, the majority of the insecticidal components will quickly settle and adhere to the entire floor surface of the indoor treatment space, and a practically sufficient control effect against crawling insects will be obtained. Such a spray force can be appropriately adjusted by the composition of the aerosol concentrate, the internal pressure of the aerosol container, the shape of the nozzle, etc. In this embodiment, the spray force of the pest control aerosol was measured using a digital force gauge (FGC-0.5, manufactured by Nidec-Shimpo Corporation).

[0035] The aerosol for pest control of the present invention can be appropriately selected in terms of the shape of the nozzle, container, etc., and the operating buttons, etc., according to its application and intended use. For example, it can be designed as a tabletop type with a button that sprays when pressed from above and a nozzle that points diagonally upwards, or as a portable type in a small container.

[0036] The number, shape, and size of the nozzles of the pest control aerosol of the present invention are not particularly limited. For example, the number of nozzles may be one or two or more, but from the viewpoint of simple and low-cost manufacturing, it is preferable to have one nozzle. The shape (cross-sectional shape) of the nozzle may be circular, elliptical, polygonal, or various irregular shapes. The opening area of ​​the nozzle is 0.05 to 8.0 mm². 2 Preferably, 0.1 to 4.0 mm 2 It is more preferable that the size be 0.2 to 3.0 mm. 2 It is even more preferable that the following conditions are met. For example, if there is one nozzle and the nozzle is circular in shape, the nozzle size (nozzle diameter) is preferably 0.3 mm or larger, more preferably 0.4 mm or larger, and even more preferably 0.6 mm or larger. Furthermore, the nozzle diameter is preferably 3.0 mm or smaller, more preferably 2.0 mm or smaller, and even more preferably 1.8 mm or smaller.

[0037] The nozzle of the pest control aerosol of the present invention is preferably set to an elevation angle of 0 to 60° relative to the horizontal plane. If the elevation angle of the nozzle relative to the horizontal plane is within the above range, spraying failures are less likely to occur, and the aerosol concentrate can be sprayed stably. For nozzles or actuators having two nozzles, the elevation angle of the nozzle relative to the horizontal plane is defined as the elevation angle of the perpendicular bisector of the line segment connecting the centers of each nozzle. For nozzles or actuators having three or more nozzles, the elevation angle of the nozzle relative to the horizontal plane is defined as follows: For nozzles or actuators where the nozzle is located in the center of the spraying part, the elevation angle is defined as the elevation angle of the perpendicular line passing through the center of the central nozzle. For nozzles or actuators where the nozzle is not located in the center of the spraying part, the elevation angle is defined as the elevation angle of the perpendicular line passing through the center of the circumscribed circle of the polygon connecting the centers of each nozzle.

[0038] The nozzle of the pest control aerosol of the present invention is not particularly limited, but it is preferably provided with a nozzle that points diagonally upward. The container of the pest control aerosol of the present invention is not particularly limited, but its material may include metals such as aluminum or tinplate, synthetic resins such as polyethylene terephthalate, or pressure-resistant glass. The shape of the container may be a normal cylindrical can or an irregularly shaped can. If the material of the container is synthetic resin or pressure-resistant glass, it may be semi-transparent or transparent. The operating button of the pest control aerosol of the present invention is not particularly limited, but it may be a push-down type button or a trigger type button.

[0039] The present invention's aerosol for pest control releases an amount of insecticidal component into the air of 0.1 to 50 mg / m³ when sprayed into the air in an indoor space. 3 It is preferable to set it to be 0.5 to 50 mg / m². 3 It is more preferable to set it so that the amount of insecticide released into the air in the indoor space is 0.1 to 50 mg / m³. 3When the aerosol concentrate is sprayed in such a manner, it is preferable that at least 50% by weight of the insecticidal component diffuses and adheres to the entire floor surface of the indoor space within one hour of spraying. Here, "diffusing and adhering to the entire floor surface of the indoor space" means that the floor surface is in a state where it can exert a pest control effect due to the adhered insecticidal component, and it is not necessarily required that the insecticidal component physically adheres to the entire floor surface. By having at least 50% by weight of the insecticidal component diffuse and adhere to the entire floor surface of the indoor space within one hour of spraying, the pest control aerosol of the present invention becomes highly effective in controlling crawling insects that roam the floor surface, and exhibits particularly excellent knockdown or lethal effects. Furthermore, the volume of the indoor space to be treated is not particularly limited, but 2.0 m 3 Gap space less than 2.0~18.8m 3 In small spaces, the volume equivalent to a 4.5 to 8 tatami mat room is 18.8 to 33.3 m². 3 (Area 7.5~13.3m 2 The interior space (with a height of 2.2 to 3.0 m) has a volume equivalent to an 8 to 16 tatami mat room of 33.3 to 66.6 m³. 3 (Area 13.3~26.6m 2 Examples include spacious indoor spaces with a height of 2.2 to 3.0 m, and 2.0 to 18.8 m. 3 In small spaces, the volume equivalent to a 4.5 to 8 tatami mat room is 18.8 to 33.3 m². 3 (Area 7.5~13.3m 2 An indoor space with a height of 2.2 to 3.0 m, or a volume equivalent to an 8 to 16 tatami mat room, is 33.3 to 66.6 m³. 3 (Area 13.3~26.6m 2 Preferably, the interior space should be relatively spacious (with a height of 2.2 to 3.0 m), and the volume should be equivalent to a 4.5 to 8 tatami mat room, with a volume of 18.8 to 33.3 m³. 3 (Area 7.5~13.3m 2 It is more preferable that the height be 2.2 to 3.0 m. However, in larger or smaller indoor spaces, the amount of insecticide released into the air of the indoor space should be adjusted according to the volume of the indoor space, so that it is 0.1 to 50 mg / m³. 3By appropriately setting the number of sprays, spray volume, etc., a similar pest control effect can be obtained regardless of the volume of the indoor space. Regarding the frequency of use of the pest control aerosol of the present invention, it is preferable to apply it at an appropriate time according to the frequency and condition of pest occurrence, so that the amount of insecticidal component released falls within the above range.

[0040] The pest control aerosol of the present invention is effective against cockroaches such as the American cockroach, German cockroach, and other cockroaches; bed bugs such as the Chinese bed bug and the Taiwanese bed bug; stink bugs such as the brown marmorated stink bug; ants such as the black garden ant, reticulated ant, brown ant, house ant, red imported fire ant, and other ants; spiders such as the huntsman spider, spotted house spider, and redback spider; millipedes; centipedes such as the giant centipede; pill bugs; sowbugs; Formosan subterranean termites, Japanese subterranean termites, and other pests. In addition to crawling insects such as termites and caterpillars, it can be used to control a variety of pests, including mosquitoes such as Culex pipiens, Aedes albopictus, Aedes aegypti, and Culex pipiens; flies such as houseflies and flesh flies; fruit flies, drain flies, midges, wasps, and moths; clothes moths such as clothes moths and weevil moths; carpet beetles such as carpet beetles and lesser carpet beetles; stored grain pests such as rice weevils; and indoor dust mites such as flour mites, house dust mites, dust mites, predatory mites, and house dust mites. In particular, it is effective in controlling crawling pests such as cockroaches including the American cockroach, German cockroach, and Oriental cockroach; bed bugs including the bed bug and Taiwanese bed bug; ants including the black garden ant, reticulated ant, brown ant, house ant, red imported fire ant, and red-backed ant; and spiders including the huntsman spider, spotted house spider, and redback spider. It exhibits particularly excellent control effects against German cockroaches, American cockroaches, Oriental cockroaches, and bed bugs.

[0041] [Pest control methods] In the pest control method of the present invention, various pests can be controlled by performing spraying treatment using the pest control aerosol thus obtained. Specifically, using the pest control aerosol, the spraying volume per shot is set to 0.1 to 3.0 mL, preferably 0.2 to 1.0 mL, more preferably 0.2 to 0.9 mL, and spraying treatment is performed into the air in an indoor space, so that the release amount of the control component into the air is 0.1 to 50 mg / m 3 , preferably 0.5 to 50 mg / m 3 and is set as such. Also, the volume of the indoor space to be treated is not particularly limited, but includes an interstitial space of less than 2.0 m 3 , a narrow space of 2.0 to 18.8 m 3 , an indoor space corresponding to a room of 4.5 to 8 tatami mats with a volume of 18.8 to 33.3 m 3 (area 7.5 to 13.3 m 2 , height 2.2 to 3.0 m), a relatively large indoor space corresponding to a room of 8 to 16 tatami mats with a volume of 33.3 to 66.6 m 3 (area 13.3 to 26.6 m 2 , height 2.2 to 3.0 m), etc. Examples include a narrow space of 2.0 to 18.8 m 3 , an indoor space corresponding to a room of 4.5 to 8 tatami mats with a volume of 18.8 to 33.3 m 3 (area 7.5 to 13.3 m 2 , height 2.2 to 3.0 m), or a relatively large indoor space corresponding to a room of 8 to 16 tatami mats with a volume of 33.3 to 66.6 m 3 (area 13.3 to 26.6 m 2 , height 2.2 to 3.0 m), and it is preferably such an indoor space, and more preferably an indoor space corresponding to a room of 4.5 to 8 tatami mats with a volume of 18. to 33.3 m 3 (area 7.5 to 13.3 m 2 , height 2.2 to 3.0 m). For example, when performing spraying treatment in an indoor space corresponding to a room of 4.5 to 8 tatami mats with a volume of 18.8 to 33.3 m 3 (area 7.5 to 13.3 m 2 , height 2.2 to 3.0 m), by spraying the aerosol stock solution once or multiple times, the release amount of the control component into the air is 0.1 to 50 mg / m 3This is the case. However, even in larger or smaller indoor spaces, the amount of insecticide released into the air of the indoor space should be adjusted according to the volume of the indoor space, ranging from 0.1 to 50 mg / m³. 3 By appropriately setting the number of sprays, spray volume, etc., a similar pest control effect can be obtained regardless of the volume of the indoor space. The frequency of application of the pest control method of the present invention is preferably at an appropriate time depending on the frequency and condition of pest occurrence, so that the amount of insecticidal component released falls within the above range.

[0042] In the pest control method of the present invention, it is preferable to spray the aerosol so that the spray direction angle is 0 to 60° with respect to the horizontal plane, and more preferably 30 to 60°. If the spray direction angle of the aerosol is within the above range, excellent diffusion uniformity is achieved. [Examples]

[0043] To verify the effectiveness of the pest control aerosol of the present invention, pest control aerosols (Examples 1-18) possessing the characteristic configuration of the present invention were prepared, and tests were conducted to evaluate (1) the extermination effect against cockroaches, (2) the extermination effect against bed bugs, and (3) the adhesion rate and uniformity of diffusion of the insecticidal component to the floor surface, as described in Test Example 1. For comparison, pest control aerosols (Comparative Examples 1-3) that do not possess the characteristic configuration of the present invention were also prepared, and similar tests were conducted. Furthermore, using the pest control aerosols possessing the characteristic configuration of the present invention (Examples 1 and 9) and the pest control aerosol without the characteristic configuration of the present invention (Comparative Example 3), a test was conducted to evaluate (1) the extermination effect against other pests, as described in Test Example 2. The specific gravity (20°C) of the insecticidal component and solvent used in the examples and comparative examples is shown below. However, the present invention is not limited to these examples. Transfluthrin 1.51 Metofluthrin 1.28 • Profluthrin 1.28 • Phenothrin 1.06 • Permethrin 1.20 • Empenthrin 0.93 Ethanol 0.79 Isopropanol 0.7g Neothiozol 0.76 Isopropyl myristate 0.86 Phenylenyl glycol 1.11

[0044] [Example 1] An aerosol concentrate was prepared by dissolving the insecticidal component transfluthrin (40 w / v%) in ethanol, a solvent. This aerosol concentrate has a specific gravity of 0.98 at 20°C and a viscosity of η at 10°C. 10 The viscosity is 5.0 mPa·s, and the viscosity at 30°C is η 30 It is 4.0 mPa·s, and the ratio η 30 / η 10 It is 0.80, and the specific gravity (p) and ratio η at 20℃ 30 / η 10 The product of (q) squared is (p)·(q). 2 The ratio was 0.63. A pressure-resistant aerosol container (a) with a metered-dose spray valve and a spray capacity of 0.4 mL was pressurized and filled with 9 mL of aerosol concentrate (a) and 21 mL of liquefied petroleum gas (b) as the propellant, such that the volume ratio (a) / (a+b) of the aerosol concentrate (a) to the propellant (b) was 0.3 by volume, thereby obtaining the pest control aerosol of Example 1. The spray force of this pest control aerosol at a spray distance of 5 cm was 15 gf.

[0045] [Examples 2-18, Comparative Examples 1-3] Aerosols for pest control, as shown in Table 1, were prepared using the same procedure as in Example 1 for Examples 2 to 18. For comparison, aerosols for pest control, as shown in Comparative Examples 1 to 3, were also prepared. For the aerosols for pest control in Examples 2, 12 to 14, and 16, an aerosol container with a metered-dose valve with a single-spray volume of 1.0 mL was used. For the aerosols for pest control in Examples 3 to 6, 8 to 11, 15, 17, and 18, and Comparative Examples 1 to 3, an aerosol container with a metered-dose valve with a single-spray volume of 0.4 mL was used. For the aerosol for pest control in Example 7, an aerosol container with a metered-dose valve with a single-spray volume of 0.2 mL was used.

[0046] [Table 1]

[0047] <Test Example 1> (1) Effectiveness in controlling cockroaches Eight 20x20cm glass plates (one for German cockroaches, one for American cockroaches) enclosed in a 25m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2 The glass plates were placed in the four corners of the room, and plastic rings approximately 20 cm in diameter, coated with petroleum jelly to prevent escape, were placed on top of each glass plate. The specified test insects (German cockroach: 5 female adults, American cockroach: 5 nymphs) were released into each ring and allowed to roam freely. In Examples 1, 3-6, 8-11, 17, and 18, and Comparative Examples 1-3, 0.4 mL of the test aerosol was sprayed four times at a slightly upward angle in the center of the room (1.5 m above the floor). In Examples 2, 13, and 16, 1.0 mL of the test aerosol was sprayed once at a slightly upward angle in the center of the room (1.5 m above the floor). In Example 7, 0.2 mL of the test aerosol was sprayed six times at a slightly upward angle in the center of the room (1.5 m above the floor). In Examples 12 and 14, 1.0 mL of the test aerosol was sprayed four times at a time in the center of the room (1.5 m above the floor), with the spray direction slightly diagonally upwards. In Example 15, 0.4 mL of the test aerosol was sprayed six times at a time in the center of the room (1.5 m above the floor), with the spray direction slightly diagonally upwards. The test insects were left for 30 minutes after spraying to be exposed to the chemical, and during that time, the number of test insects that turned upside down was counted. 50 The values ​​were determined. Furthermore, 30 minutes after spraying, the glass plate, along with the ring containing the test insects, was moved to a separate room, and food was provided. After another 24 hours, the lethality of the test insects was determined. In Table 2 below, the KT values ​​for German cockroaches are shown. 50The values ​​were indicated as follows: "A" for values ​​of 8.0 minutes or less, "B" for values ​​between 8.1 and 12.0 minutes, "C" for values ​​between 12.1 and 30.0 minutes, and "D" for values ​​estimated to be 30.1 minutes or more. (KT of the American cockroach) 50 The values ​​were categorized as follows: "A" for values ​​of 11.0 minutes or less, "B" for values ​​between 11.1 and 18.0 minutes, "C" for values ​​between 18.1 and 30.0 minutes, and "D" for values ​​estimated to be 30.1 minutes or more. The mortality rates for German cockroaches and American cockroaches were categorized as follows: "A" for values ​​between 90 and 100%, "B" for values ​​between 75 and 85%, "C" for values ​​between 50 and 70%, and "D" for values ​​less than 50%.

[0048] (2) Efficacy against bed bugs A total of four 20 x 20 cm glass plates enclosed in a 25 m³ space. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2The glass plates were placed in the four corners of the room, and plastic rings approximately 10 cm in diameter, coated with petroleum jelly to prevent escape, were placed on top of each glass plate. The specified test insects (bed bugs: 5 individuals) were released into each ring and allowed to roam freely. In Examples 1, 3-6, 8-11, 17, and 18, and Comparative Examples 1-3, 0.4 mL of the test aerosol was sprayed four times at the center of the room (1.5 m above the floor), with the direction slightly diagonally upwards. In Examples 2, 13, and 16, 1.0 mL of the test aerosol was sprayed once at the center of the room (1.5 m above the floor), with the direction slightly diagonally upwards. In Example 7, 0.2 mL of the test aerosol was sprayed six times at the center of the room (1.5 m above the floor), with the direction slightly diagonally upwards. In Examples 12 and 14, 1.0 mL of the test aerosol was sprayed four times at a time in a slightly upward-angled direction in the center of the room (1.5 m above the floor). In Example 15, 0.4 mL of the test aerosol was sprayed six times at a time in a slightly upward-angled direction in the center of the room (1.5 m above the floor). After allowing the test insects to be exposed to the chemical for 30 minutes, the glass plate, along with the ring containing the test insects, was moved to another room, and the mortality rate of the test insects was determined after another 24 hours. In Table 2 below, the mortality rate of bed bugs is indicated as "A" when it is 90-100%, "B" when it is 75-85%, "C" when it is 50-70%, and "D" when it is less than 50%.

[0049] (3) Adhesion rate and uniformity of diffusion of insecticide components on the floor surface Volume 25m 3 The room (equivalent to a 6-tatami mat room, area 10m²) 220 x 20 cm glass plates were placed at 6 to 8 locations on the floor surface. In Examples 1, 3-6, 8-11, 17, and 18, and Comparative Examples 1-3, 0.4 mL of the test aerosol was sprayed four times at the center of the room (1.5 m above the floor), with the direction slightly diagonally upward. In Examples 2, 13, and 16, 1.0 mL of the test aerosol was sprayed once at the center of the room (1.5 m above the floor), with the direction slightly diagonally upward. In Example 7, 0.2 mL of the test aerosol was sprayed six times at the center of the room (1.5 m above the floor), with the direction slightly diagonally upward. In Examples 12 and 14, 1.0 mL of the test aerosol was sprayed four times at the center of the room (1.5 m above the floor), with the direction slightly diagonally upward. In Example 15, 0.4 mL of the test aerosol was sprayed six times at a slightly upward angle in the center of the room (1.5 m above the floor). After 1 hour, all glass plates were removed, and the adhering insecticide components were washed off with acetone and quantitatively analyzed by gas chromatography. Based on the obtained analytical values, the ratio (floor surface adhesion rate) of the amount of insecticide components that settled and adhered to the floor surface after 1 hour of spraying (calculated by total amount of insecticide components adhering to the glass plate × (room area) / (total area of ​​glass plates)) to the theoretical total amount of insecticide components sprayed (which corresponds to the amount of insecticide components released multiplied by the volume in Table 1) was determined. In addition, the variation in the adhering insecticide components between each glass plate was analyzed to evaluate the uniformity of diffusion. The results are shown in order of best diffusion uniformity as "A", "B", "C", and "D".

[0050] The test results are shown in Table 2.

[0051] [Table 2]

[0052] The test results showed that the vapor pressure at 30°C was 1.5 × 10⁻⁶. -3 The pest control aerosols of Examples 1-18, which use insecticidal components with a concentration of less than mmHg, exhibit a high lethal effect with a mortality rate of over 80% against both cockroaches and bed bugs, and KT50 It was confirmed that the values ​​were 8.3 min or less for German cockroaches and 18.0 min or less for American cockroaches, demonstrating a high knockdown effect. In particular, the vapor pressure at 30°C was 1.0 × 10⁻⁶. -4 mmHg or higher, 1.5 × 10 -3 Examples 1-8, 11, 12, 14, 15, 17, and 18, which use pyrethroid insecticides with a concentration of less than mmHg, are KT 50 The values ​​were confirmed to be 8.0 min or less for German cockroaches and 12.0 min or less for American cockroaches, demonstrating a high knockdown effect. In particular, the pest control aerosols of Examples 1-7, 11, 12, 14, 15, 17, and 18, which used transfluthrin or metofluthrin, were found to possess both excellent lethal and knockdown effects against cockroaches. Furthermore, the test results showed that the pest control aerosols of Examples 1-18 not only achieved a floor surface adhesion rate of 50% or more of the insecticide component one hour after spraying, but also showed that the insecticide component was diffused and adhered almost uniformly across the entire floor surface. The specific gravity of the pest control aerosols of Examples 1-18 at 20°C and viscosity η at 30°C of the aerosol concentrate were also confirmed. 30 and viscosity η at 10°C 10 The ratio η 30 / η 10 Because the mixture was properly adjusted, the insecticidal components spread and adhered uniformly to the entire floor surface, and as a result, it is believed that the insecticidal components came into efficient contact with crawling insects at any point on the floor surface.

[0053] In contrast, the aerosol for pest control in Comparative Example 1 had a ratio of η of the aerosol concentrate. 30 / η 10 Because the amount was small, the insecticidal components adhered unevenly to the floor surface, resulting in insufficient lethal and knockdown effects against both cockroaches and bed bugs. The aerosol for pest control in Comparative Example 2 had a ratio of η of the aerosol concentrate. 30 / η 10Because the ratio η was large and the specific gravity at 20°C was small, the amount of insecticide adhering to the floor surface was insufficient, and the adhesion of the insecticide to the floor surface was uneven, resulting in significantly low lethal and knockdown effects against both cockroaches and bed bugs. In the pest control aerosol of Comparative Example 3, the specific gravity and ratio η of the aerosol concentrate at 20°C were 30 / η 10 Although the ingredients are properly adjusted, the vapor pressure of the insecticidal component empenthrin at 30°C is 1.5 × 10⁻⁶. -3 Because the levels were above mmHg, the amount of insecticide adhering to the floor surface was insufficient, and the adhesion of the insecticide to the floor surface was uneven, which is thought to have prevented a sufficient lethal effect and knockdown effect from being obtained.

[0054] <Test Example 2> Effective against other pests. A total of 12 glass plates measuring 20 x 20 cm (one for the Japanese house spider, one for the black garden ant, and one for the American cockroach) are enclosed in a 25 m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2 The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on each glass plate. The specified test insects (one Japanese house spider, five black garden ants, and five female adult cockroaches) were released into each ring and allowed to roam freely. The pest control aerosols of Examples 1 and 9 and Comparative Example 3 were sprayed in four shots of 0.4 mL each in the center of the room (1.5 m above the floor), changing the direction slightly upwards. After leaving the sample insects exposed to the chemical for 30 minutes, the glass plates, along with the rings containing the insects, were moved to another room, where they were fed, and the mortality rate of the test insects was determined after another 24 hours.

[0055] The test results are shown in Table 3.

[0056] [Table 3]

[0057] The test results showed that the pest control aerosols of Examples 1 and 9 exhibited excellent lethal effects against the Japanese house spider, black garden ant, and American cockroach. In contrast, the pest control aerosol of Comparative Example 3 did not provide sufficient lethal effects against any of the Japanese house spider, black garden ant, or American cockroach.

[0058] <Test Example 3> Effectiveness against spiders A total of four 20x20cm glass plates (for the Japanese house spider) enclosed in a 25m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2 The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on each glass plate. A predetermined test insect (a type of spider: 1 individual) was released into each ring and allowed to roam freely. The pest control aerosol of Example 18 was sprayed in four shots of 0.4 mL each in the center of the room (1.5 m above the floor), changing the direction slightly upwards. After leaving it for 30 minutes to expose the test insect to the chemical, the glass plates, along with the rings containing the insects, were moved to another room, and food was provided. After another 24 hours, the mortality rate of the test insects was determined, and the mortality rate was 100%.

[0059] <Test Example 4> Effectiveness against ants A total of four 20x20cm glass plates (for black garden ants) enclosed in a 25m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2 The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on each glass plate. The specified test insects (black garden ants: 5 individuals) were released into each ring and allowed to roam freely. The pest control aerosol of Example 18 was sprayed in four shots of 0.4 mL each in the center of the room (1.5 m above the floor), changing the direction slightly upwards. After leaving it for 30 minutes to expose the test insects to the chemical, the glass plates, along with the rings containing the insects, were moved to another room, and the insects were fed. After another 24 hours, the mortality rate of the test insects was determined, and the mortality rate was 100%.

[0060] <Test Example 5> Effectiveness against centipedes A total of four 20x20cm glass plates (for centipedes) enclosed in a 25m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2 The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on each glass plate. A predetermined test insect (centipede: 1) was released into each ring and allowed to roam freely. The pest control aerosol of Example 18 was sprayed in four shots of 0.4 mL each in the center of the room (1.5 m above the floor), changing the direction slightly upwards. After leaving it for 30 minutes to expose the test insect to the chemical, the glass plates, along with the rings containing the test insects, were moved to another room, and the mortality rate of the test insects was determined after another 24 hours, and the mortality rate was 100%.

[0061] <Test Example 6> Effectiveness against house centipedes A total of four 20x20cm glass plates (for house centipedes) enclosed in a 25m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2 The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on each glass plate. A predetermined test insect (house centipede: 1) was released into each ring and allowed to roam freely. The pest control aerosol of Example 18 was sprayed in four shots of 0.4 mL each in the center of the room (1.5 m above the floor), changing the direction slightly upwards. After leaving it for 30 minutes to expose the test insect to the chemical, the glass plates, along with the rings containing the insects, were moved to another room, and the mortality rate of the test insects was determined after another 24 hours, and the mortality rate was 100%.

[0062] <Test Example 7> Effectiveness against stink bugs A total of four 20x20cm glass plates (for stink bugs) enclosed in a 25m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on each glass plate. A predetermined test insect (stink bug: 1) was released into each ring and allowed to roam freely. The pest control aerosol of Example 18 was sprayed in four shots of 0.4 mL each in the center of the room (1.5 m above the floor), changing the direction slightly upwards. After leaving it for 30 minutes to expose the test insect to the chemical, the glass plates, along with the rings containing the insects, were moved to another room, and the mortality rate of the test insects was determined after another 24 hours, and the mortality rate was 100%.

[0063] <Test Example 8> Effectiveness against woodlice A total of four 20x20cm glass plates (for woodlice) enclosed in a 25m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2 The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on each glass plate. A predetermined test insect (woodlouse: 1 individual) was released into each ring and allowed to roam freely. The pest control aerosol of Example 18 was sprayed in four shots of 0.4 mL each in the center of the room (1.5 m above the floor), changing the direction slightly upwards. After leaving it for 30 minutes to expose the test insect to the chemical, the glass plates, along with the rings containing the insects, were moved to another room, and the mortality rate of the test insects was determined after another 24 hours, and the mortality rate was 100%.

[0064] <Test Example 9> Effectiveness against pill bugs A total of four 20x20cm glass plates (for pill bugs) enclosed in a 25m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on each glass plate. Three test insects (pill bugs) were released into each ring and allowed to roam freely. The pest control aerosol of Example 18 was sprayed in four shots of 0.4 mL each in the center of the room (1.5 m above the floor), changing the direction slightly upwards. After leaving it for 30 minutes to expose the test insects to the chemical, the glass plates, along with the rings containing the insects, were moved to another room, and the mortality rate of the test insects was determined after another 24 hours. The mortality rate was found to be 83%.

[0065] <Test Example 10> Effectiveness against booklice A total of four 20x20cm glass plates (for booklice) enclosed in a 25m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2 The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on each glass plate. Three test insects (booklice) were released into each ring and allowed to roam freely. The pest control aerosol of Example 18 was sprayed in four shots of 0.4 mL each in the center of the room (1.5 m above the floor), changing the direction slightly upwards. After leaving it for 30 minutes to expose the test insects to the chemical, the glass plates, along with the rings containing the insects, were moved to another room, and the mortality rate of the test insects was determined after another 24 hours, and the mortality rate was 100%.

[0066] <Test Example 11> Effectiveness against cigarette beetles A total of four 20x20cm glass plates (for cigarette beetles) enclosed in a 25m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on each glass plate. Three test insects (cigarette beetles) were released into each ring and allowed to roam freely. The pest control aerosol of Example 18 was sprayed in four shots of 0.4 mL each in the center of the room (1.5 m above the floor), changing the direction slightly upwards. After leaving it for 30 minutes to expose the test insects to the chemical, the glass plates, along with the rings containing the insects, were moved to another room, and the mortality rate of the test insects was determined after another 24 hours, and the mortality rate was 92%.

[0067] <Test Example 12> Effectiveness against rice weevils A total of four 20x20cm glass plates (for rice weevils) enclosed in a 25m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2 The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on each glass plate. A predetermined test insect (rice weevil: 1 individual) was released into each ring and allowed to roam freely. The pest control aerosol of Example 18 was sprayed in four shots of 0.4 mL each in the center of the room (1.5 m above the floor), changing the direction slightly upwards. After leaving it for 30 minutes to expose the test insect to the chemical, the glass plates, along with the rings containing the insects, were moved to another room, and the mortality rate of the test insects was determined after another 24 hours, and the mortality rate was 100%.

[0068] <Test Example 13> Effectiveness against carpet beetles A total of four 20x20cm glass plates (for carpet beetles) enclosed in a 25m³ enclosure. 3 The room (equivalent to a 6-tatami mat room, area 10m²) 2The glass plates were placed in the four corners of the room, and plastic rings with a diameter of approximately 20 cm were placed on each glass plate. Three test insects (carpet beetles) were released into each ring and allowed to roam freely. The pest control aerosol of Example 18 was sprayed in four shots of 0.4 mL each in the center of the room (1.5 m above the floor), changing the direction slightly upwards. After leaving it for 30 minutes to expose the test insects to the chemical, the glass plates, along with the rings containing the insects, were moved to another room, and the mortality rate of the test insects was determined after another 24 hours. The mortality rate was found to be 83%.

[0069] <Test Example 14> Effective against moths Volume 25m 3 In the room, the pest control aerosol of Example 18 was sprayed in four 0.4 mL increments at the center of the room (1.5 m above the floor), with the spray direction slightly upward. Four moths were immediately released and exposed to the pesticide for two hours, after which all test insects were collected. The mortality rate of the test insects was determined after 24 hours and was found to be 100%.

[0070] <Test Example 15> Mosquito control effect Volume 25m 3 In the room, the pest control aerosol of Example 1 was sprayed in four 0.4 mL increments at the center of the room (1.5 m above the floor), with the spray direction slightly upward. Immediately afterward, 50 adult male Culex pipiens were released and exposed to the pesticide for 2 hours, after which the test insects were collected. The mortality rate of the test insects was determined after 24 hours and was found to be 100%. [Industrial applicability]

[0071] The aerosol for pest control and the pest control method of the present invention can be used for the purpose of controlling pests indoors, particularly crawling insects such as cockroaches and bed bugs.

Claims

1. The vapor pressure at 30°C is 1.5 × 10⁻⁶ －３ The aerosol concentrate, containing an insecticidal component and solvent at a concentration of less than mmHg, and a propellant, are filled into an aerosol container equipped with a metering valve, with a volume of 18.8 to 66.6 m³. ３ An aerosol for pest control used for spraying into indoor spaces, The target of control is cockroaches. The insecticidal component has a vapor pressure of 1.0 × 10⁻⁶ at 30°C. －４ mmHg or higher, 1.5 × 10 －３ It contains only pyrethroid insecticide components with a concentration of less than mmHg. The content of the insecticidal component in the aerosol concentrate is 8 to 80 w / v%, The aerosol stock solution has a specific gravity at 20°C of 0.82 to 1.25 and a viscosity η at 10°C １０ of 3.2 to 60.0 mPa·s, and a viscosity η at 30°C ３０ and the viscosity η at 10°C １０ and the ratio η ３０ / η １０ is 0.40 to 0.92, The aforementioned quantitative injection valve has an injection volume of 0.1 to 3.0 mL per injection. The amount of the insecticidal component released into the air in indoor spaces is 0.1 to 50 mg / m³. ３ An aerosol for pest control that is configured to spray the aerosol concentrate in such a manner.

2. Let p be the specific gravity of the aerosol concentrate at 20°C, and let η be the ratio. ３０ / η １０ When we let q be (p)・(q) ２ The aerosol for pest control according to claim 1, wherein the ratio is 0.17 to 1.

00.

3. The aerosol for pest control according to claim 1 or 2, wherein the cockroaches are American cockroaches.

4. The vapor pressure at 30°C is 1.5 × 10⁻⁶ －３ Using an aerosol for pest control, which is prepared by filling an aerosol concentrate containing an insecticidal component and solvent at a concentration of less than mmHg, along with a propellant, into an aerosol container equipped with a metering valve, the volume is 18.8 to 66.6 m³. ３ A method for controlling pests by spraying treatment into indoor spaces, The target of control is cockroaches. The insecticidal component has a vapor pressure of 1.0 × 10⁻⁶ at 30°C. －４ mmHg or higher, 1.5 × 10 －３ It contains only pyrethroid insecticide components with a concentration of less than mmHg. The content of the insecticidal component in the aerosol concentrate is 8 to 80 w / v%, The aerosol concentrate has a specific gravity of 0.82 to 1.25 at 20°C and a viscosity of η at 10°C. １０ The viscosity is 3.2 to 60.0 mPa·s, and the viscosity at 30°C is η ３０ and viscosity η at 10°C １０ The ratio η ３０ / η １０ The values ​​are 0.40 to 0.

92. The aforementioned quantitative injection valve has an injection volume of 0.1 to 3.0 mL per injection. The amount of the insecticidal component released into the air in indoor spaces is 0.1 to 50 mg / m³. ３ A pest control method comprising spraying the pest control aerosol into the air indoors so that the aerosol concentrate is sprayed in such a manner.

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