Control method of crawling pest, and aerosol device for controlling crawling pest

Abstract

To provide a control method of crawling pest and an aerosol device for controlling crawling pest in which crawling pest such as spider can be controlled by spraying an aerosol composition by a fixed amount, and liquid dripping is hard occur around a jetting port of an aerosol device.SOLUTION: A method for spraying an aerosol composition into an objective space to control crawling pest, in which by using an aerosol device that comprises: an aerosol container filled with an aerosol composition containing stock solution and propellant such that a blending ratio (volume ratio) becomes 5:95 to 40:60; an aerosol valve for spraying a fixed amount; and a spray member to which a jetting port for spraying the aerosol composition is formed and includes a spray nozzle to which a linear spray passage, on one end of which the jetting port is formed, is formed, where a ratio (L / R) between a jetting port diameter R(mm) and a length L(mm) of the spray passage exceeds 6.9 and less than 75, the aerosol composition is sprayed from the jetting port.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method for controlling crawling pests and an aerosol device for controlling crawling pests. More specifically, the present invention relates to a method for controlling crawling pests and an aerosol device for controlling crawling pests, which can control crawling pests such as spiders by spraying a fixed amount of an aerosol composition, and which does not contaminate the surroundings of the spray such as floor surfaces and is unlikely to cause liquid dripping around the nozzle. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there has been known a method for controlling crawling pests such as spiders and cockroaches by spraying into space an aerosol composition containing an active ingredient for controlling crawling pests (eg, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-159226 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the aerosol agent described in Patent Document 1, for example, continuously sprays about 20 mL of the agent to kill spiders or prevent them from building webs. In this case, since a large amount of the agent is sprayed, floors and furniture are likely to be contaminated when used indoors. In addition, the propellant may cause electrical contacts in refrigerators and the like to become a fire source, which may lead to a risk of ignition and explosion. Furthermore, there is a problem in that the spraying of a large amount of the agent may easily cause liquid dripping around the nozzle of the aerosol device.

[0005] The present invention has been made in consideration of such conventional problems, and aims to provide a method for controlling creeping pests and an aerosol device for controlling creeping pests, which can control creeping pests such as spiders by spraying a fixed amount of an aerosol composition and is less likely to cause liquid dripping around the nozzle of the aerosol device. In this embodiment, "control" includes both extermination, which means killing insects, and repelling, which means inhibiting establishment or invasion. [Means for solving the problem]

[0006] After much research, the inventors have discovered that when spraying a fixed amount of pesticide into a target space, crawling pests can be effectively controlled, there is no contamination of the surrounding area of ​​the spray such as the floor, and dripping of the liquid around the nozzle is reduced by setting the dimensions of the spray nozzle's nozzle diameter and the length of the spray passage to a predetermined ratio, and by setting the mixing ratio (volume ratio) of the concentrate to the propellant within a specific range, thereby solving the above problems and completing the present invention.

[0007] The method for controlling crawling pests of the present invention, which solves the above-mentioned problems, is a method for controlling crawling pests by spraying an aerosol composition into a target space to control crawling pests, and comprises: an aerosol container filled with an aerosol composition containing a concentrate and a propellant in a mixing ratio (volume ratio) of 5:95 to 40:60; an aerosol valve for constant-amount spray attached to the aerosol container; and an injection member attached to the aerosol container via the aerosol valve for constant-amount spray, the injection nozzle having an injection nozzle at its tip for spraying the aerosol composition and having a linear injection passage at one end of which the injection nozzle is formed, and the aerosol device has an injection nozzle diameter R (mm) of the injection nozzle and a length L (mm) of the injection passage, the ratio (L / R) being greater than 6.9 and less than 75.

[0008] In addition, the aerosol device for controlling crawling pests of the present invention, which solves the above-mentioned problems, comprises an aerosol container filled with an aerosol composition containing a concentrate and a propellant, an aerosol valve for constant-volume spray attached to the aerosol container, and an injection member attached to the aerosol container via the aerosol valve for constant-volume spray, the injection member including an injection nozzle having an orifice at its tip for spraying the aerosol composition, the injection member having a linear injection passage with the orifice formed at one end, the ratio (L / R) of the orifice diameter R (mm) of the orifice to the length L (mm) of the injection passage being greater than 6.9 and less than 75, and the blending ratio (volume ratio) of the concentrate to the propellant being 5:95 to 40:60. Effect of the Invention

[0009] According to the present invention, it is possible to provide a method for controlling crawling pests and an aerosol device for controlling crawling pests, which can control crawling pests such as spiders by spraying a fixed amount of an aerosol composition, and which does not contaminate the surrounding area of ​​the spray, such as the floor surface, and is less likely to cause dripping around the nozzle. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a schematic side view of an aerosol device according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic cross-sectional view of an injection nozzle of an aerosol device according to one embodiment of the present invention. [Diagram 3] FIG. 3 is a schematic perspective view of the experimental setup in which the efficacy tests were carried out. [Figure 4] FIG. 4 is a schematic plan view of the experimental setup in which the efficacy tests were carried out. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] [How to control creeping pests] A method for controlling crawling pests according to one embodiment of the present invention (hereinafter, also simply referred to as a control method) is a method for controlling crawling pests by spraying an aerosol composition into a target space. The control method is a method for spraying the aerosol composition from a nozzle using an aerosol device that includes an aerosol container filled with an aerosol composition containing a concentrate and a propellant in a mixing ratio (volume ratio) of 5:95 to 40:60, an aerosol valve for constant-amount spraying attached to the aerosol container, and a spray member that is attached to the aerosol container via the aerosol valve for constant-amount spraying and includes a spray nozzle having a nozzle formed at its tip for spraying the aerosol composition and a linear spray passage formed with a nozzle at one end, and in which the ratio (L / R) of the nozzle diameter R (mm) of the nozzle to the length L (mm) of the spray passage is more than 6.9 and less than 75. The control method will be described in detail below. In the following description, the configuration of the constant-dose aerosol device (aerosol container, aerosol valve, and spray member (excluding the nozzle length and nozzle diameter of the spray nozzle), etc.) is a configuration commonly used in the technical field of aerosols. Therefore, the following description is an example, and these configurations may be appropriately modified in design. Also, for clarity of explanation, an outline of the aerosol device will be described first.

[0012] <Fixed-volume aerosol device> FIG. 1 is a schematic side view of a constant-amount aerosol device (hereinafter, simply referred to as aerosol device 1) of this embodiment. The aerosol device 1 of this embodiment includes an aerosol container 2 filled with an aerosol composition containing a concentrate and a propellant, an aerosol valve for constant-amount spraying (hereinafter, simply referred to as aerosol valve 3) attached to the aerosol container 2, and an ejection member 4 attached to the aerosol container 2 via the aerosol valve 3. The ejection member 4 is attached with an ejection nozzle 5 having an ejection port 51 formed at its tip for ejecting the aerosol composition. The ejection member is formed with a linear ejection passage having an ejection port 51 formed at one end. The ratio (L / R) of the ejection port diameter R (mm) (see FIG. 2) to the ejection passage length L (mm) is more than 6.9 and less than 75. The blending ratio (volume ratio) of the concentrate and the propellant is 5:95 to 40:60.

[0013] (Aerosol container 2) The aerosol container 2 is a pressure-resistant container for pressurizing and filling the aerosol composition. The aerosol container 2 is a roughly cylindrical container having a space formed therein into which the aerosol composition is filled. An opening is provided at the top of the aerosol container 2. The opening is sealed by an aerosol valve 3 described later.

[0014] There is no particular limitation on the material of the aerosol container 2. For example, the aerosol container 2 may be made of various pressure-resistant metals, resins, glass, or the like.

[0015] Undiluted solution The concentrate is a component that can constitute an aerosol composition together with a propellant. The concentrate is filled into the aerosol container 2 when the aerosol composition is prepared. The concentrate contains a control component for crawling pests.

[0016] The control component for crawling pests is not particularly limited. For example, the control component may be peppermint oil, orange oil, fennel oil, cinnamon oil, clove oil, turpentine oil, eucalyptus oil, Japanese cedar oil, jasmine oil, neroli oil, peppermint oil, bergamot oil, butygrain oil, lemon oil, lemongrass oil, cinnamon oil, citronella oil, geranium oil, citral, l-menthol, menthone, citronellyl acetate, cinnamic aldehyde, terpineol, nonyl alcohol, ci Various essential oil components such as s-jasmone, limonene, linalool, 1,8-cineole, geraniol, α-pinene, p-menthane-3,8-diol, eugenol, menthyl acetate, thymol, benzyl benzoate, benzyl salicylate, propylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, dipropylene glycol dimethyl ether dibasic acid esters such as dibutyl adipate; pyrethrins, allethrin, phthalthrin, resmethrin, furamethrin, fenothrin, permethrin, cypermethrin, empenthrin, prallethrin, cyphenothrin, imiprothrin, transfluthrin, metofluthrin, profluthrin, mepafluthrin, dimefluthrin, bifenthrin; organophosphorus compounds such as fenitrothion, dichlorvos, chlorpyrifos-methyl, diazinon, fenthion; carbamate compounds such as carbaryl and propoxur; methoprene, pyriproxyfen, brofuranilide, methoxadiazone, fipronil, amidoflumet, and the like.

[0017] Among these, the control component is preferably a pyrethroid compound, methoxadiazone, or an essential oil component, from the viewpoint of ease of controlling crawling pests, and more preferably includes permethrin, cypermethrin, phthalthrin, fenothrin, transfluthrin, menthyl acetate, methoxadiazone, cyphenothrin, broflanilide, bifenthrin, 1-menthol, or menthone.

[0018] The content of the control component is not particularly limited as long as it is a content that exhibits a control effect.For example, the content of the control component in the aerosol composition is preferably 0.01 mass / volume% or more, more preferably 0.1 mass / volume% or more.By the content of the control component being within the above range, the control method of the present embodiment is easy to control crawling pests.

[0019] In particular, when the control component is a pyrethroid compound, the content of the pyrethroid compound in the aerosol composition is preferably 0.01 mass / volume% or more, more preferably 0.1 mass / volume% or more. The content of the pyrethroid compound in the aerosol composition is preferably 50 mass / volume% or less, more preferably 45 mass / volume% or less. By having the content of the pyrethroid compound in the above range, the control method of this embodiment is easy to control crawling pests.

[0020] The type of creeping pest is not particularly limited. For example, creeping pests are spiders, cockroaches, centipedes, ants, house centipedes, millipedes, pillbugs, woodlouses, termites, caterpillars, mites, lice, ticks, bedbugs, etc. Among these, the control method of the present embodiment is preferably carried out against spiders, cockroaches, and bedbugs, and more preferably against spiders. The control method of the present embodiment is carried out against these creeping pests, so that it is easy to control these creeping pests. In particular, when the creeping pest is a spider, the control method of the present embodiment can suitably prevent such spiders from adhering to walls or building webs in the corners of a room by spraying the aerosol composition from the nozzle 51 into the target space.

[0021] The stock solution may contain a solvent. The solvent is preferably contained in order to uniformly blend, for example, the control component and optional components. For example, the solvent is a lower alcohol such as ethanol, propanol, isopropanol, etc., a polyhydric alcohol such as glycerin and ethylene glycol, a linear, branched or cyclic paraffin, a petroleum such as kerosene, water, propylene carbonate, isopropyl myristate, hexyl laurate, etc.

[0022] When a solvent is contained, the content of the solvent in the concentrate is preferably 0.1 mass / volume % or more. Also, the content of the solvent in the concentrate is preferably 99.9 mass / volume % or less. By having the solvent content within the above range, the concentrate is likely to be uniformly blended with the pest control component and optional components.

[0023] In addition to the control component and solvent, the concentrate may contain other optional components, such as nonionic, anionic or cationic surfactants, antioxidants such as butylhydroxytoluene, stabilizers such as citric acid and ascorbic acid, inorganic powders such as talc and silicic acid, bactericides (mold inhibitors), deodorants, fragrances (fragrances), and dyes.

[0024] Propellant The propellant is a medium for spraying the concentrate, and is pressurized and filled into the aerosol container 2 together with the concentrate. The propellant is not particularly limited. Examples of the propellant include hydrofluoroolefin, dimethyl ether (DME), liquefied petroleum gas (LPG), etc. The propellants may be used in combination.

[0025] In addition to the propellant, the aerosol composition of the present embodiment may contain a compressed gas such as carbon dioxide gas, nitrogen gas, compressed air, or oxygen gas in order to adjust the pressure of the aerosol composition.

[0026] The mixing ratio (volume ratio) of the concentrate of the aerosol composition to the propellant may be 5:95 to 40:60, and preferably 5:95 to 35:65. By using such a mixing ratio, the aerosol device 1 increases the adhesion rate of the content components due to the linear spraying from the long nozzle. As a result, the control method of this embodiment makes it easy to control crawling pests.

[0027] (Aerosol valve 3) The aerosol valve 3 is a mechanism for taking out the aerosol composition filled in the aerosol container 2, and closes the opening of the aerosol container 2. The aerosol valve 3 of this embodiment is also formed with a metered amount chamber 32 for temporarily storing the aerosol composition taken out from the aerosol container 2. The volume of the metered amount chamber 32 corresponds to the volume of the aerosol composition sprayed in one spray.

[0028] The volume of the metered amount chamber 32 is not particularly limited. For example, the volume of the metered amount chamber 32 is preferably 0.1 mL or more. Also, the volume of the metered amount chamber 32 is preferably 3.0 mL or less. When the volume of the metered amount chamber 32 is within the above range, the aerosol device 1 can exert an excellent control effect and is less likely to contaminate the target surface.

[0029] The aerosol valve 3 includes an opening / closing member for switching between communication and cut-off between the inside of the aerosol container 2 and the outside by the user operating the ejection member 4, a housing to which the opening / closing member is attached, a mounting member for holding the housing at a predetermined position in the aerosol container 2, and a tube immersed in the liquid aerosol composition. The opening / closing member also includes a stem 31 that slides up and down in conjunction with the ejection member 4. The sliding of the stem 31 switches between communication (ejection state) and cut-off (non-ejection state) of the aerosol composition. The aerosol valve 3 is formed with a housing hole for taking in the aerosol composition from the aerosol container 2 and a stem hole for sending the taken-in aerosol composition to the ejection member 4. The housing hole is formed in the housing. The stem hole is formed in the stem 31. The path from the housing hole to the stem hole constitutes an internal passage through which the aerosol composition passes.

[0030] The stem 31 is a part attached to the aerosol valve 3, and has an internal passage for sending the aerosol composition taken up in the aerosol valve 3 to the spray button. The internal passage is appropriately opened and closed by a stem rubber. The stem 31 slides up and down along the central axis P1 of the roughly cylindrical aerosol container 2.

[0031] In a state where the concentrate and the propellant are filled, the internal pressure of the aerosol valve 3 at 25°C is preferably 0.2 MPa or more, more preferably 0.25 MPa or more. The internal pressure of the aerosol valve 3 at 25°C is preferably 0.8 MPa or less, more preferably 0.7 MPa or less. If the internal pressure of the aerosol valve 3 is less than 0.2 MPa, the aerosol composition may drip from the nozzle 51 after spraying. On the other hand, if the internal pressure of the aerosol valve 3 exceeds 0.8 MPa, the aerosol composition may leak from the aerosol container 2. The internal pressure of the aerosol valve 3 can be measured, for example, at 25°C by connecting a PGM-E small pressure sensor (manufactured by Kyowa Electric Industry Co., Ltd.) attached to a WGA-710C instrument conditioner (manufactured by Kyowa Electric Industry Co., Ltd.) to the aerosol valve 3.

[0032] (Injection member 4) The injection member 4 is a member for injecting the concentrate taken in from the aerosol container 2 together with a propellant. FIG. 2 is a schematic cross-sectional view of the injection nozzle 5 of the aerosol device 1 of this embodiment. As shown in FIG. 1 or 2, the injection member 4 includes an injection nozzle 5 having an orifice 51 formed at the tip for injecting the aerosol composition. The injection nozzle 5 is formed with a linear injection passage (third passage 52 (length Lb)) with the orifice 51 formed at one end. The injection member 4 is formed with an internal passage consisting of a first passage 41 through which the concentrate taken in from the aerosol container 2 first passes, and a second passage 42 (length La) extending in a direction substantially perpendicular to the first passage 41. In the injection member 4 of this embodiment, the third passage 52 and the second passage 42 are connected to each other, forming one substantially linear injection passage (length L (=La+Lb)). The length La of the second passage 42 is the length from one end connected to the first passage 41 to the other end on the opposite side. More specifically, the length La of the second passage 42 is the length from the central axis P1 of the aerosol container 2 to the position where the second passage 42 is connected to the injection nozzle 5, as shown in FIG.

[0033] The number and shape of the nozzles 51 are not particularly limited. The number and shape of the nozzles 51 may be any number and shape that makes the ratio (L / R) of the nozzle diameter R (mm) to the length L (mm) of the injection passage described later exceed 6.9 and less than 75. For example, the number of the nozzles 51 may be one or two or more. The size of the nozzle 51 (the nozzle diameter R) is preferably 0.2 mm or more, and more preferably 0.3 mm or more. The nozzle diameter R is preferably 3.0 mm or less, and more preferably 2.5 mm or less. The shape (cross-sectional shape) of the nozzle 51 may be a circle, an ellipse, a square, or various indefinite shapes.

[0034] The total cross-sectional area (total opening area) of the nozzle holes 51 is not particularly limited. For example, the total cross-sectional area is 0.03 mm 2 It is preferable that the thickness is 0.07 mm or more. 2 More preferably, the total cross-sectional area is 7.1 mm 2 Preferably less than 4.9 mm 2 It is more preferable that the total cross-sectional area is equal to or less than 1 mm. By having the total cross-sectional area within the above range, the aerosol device 1 can exert an excellent pest control effect and is less likely to contaminate the target surface. In this embodiment, the "total cross-sectional area" refers to the total cross-sectional area (opening area) of the nozzles 51. That is, when there is one nozzle 51, the total cross-sectional area is the cross-sectional area of ​​the nozzle 51 itself, and when there are two or more nozzles, the total cross-sectional area is the sum of the cross-sectional areas of all the nozzles. In addition, when there are two or more nozzles, the nozzle diameter R (mm) is the average diameter calculated from the total cross-sectional area of ​​the nozzles, assuming that there is only one nozzle. For example, when a circular nozzle A (radius r a ) and circular nozzle B (radius r b ) and the cross-sectional area of ​​nozzle A is πr a 2 and the cross-sectional area of ​​nozzle B is πr b 2 Then, the cross-sectional area of ​​the nozzle, which is assumed to be one nozzle, is (πr a 2 +πr b 2 ) This is the cross-sectional area (πR2 / 4), so πR 2 / 4=πr a 2 +πr b 2 =π(r a 2 +r b 2 ) and R 2 =4×(r a 2 +r b 2 ) Therefore, the nozzle diameter R in this case is 2 × (r a 2 +r b 2 ) 1 / 2 It is calculated as follows.

[0035] The spray nozzle 5 is a generally linear nozzle having an internal spray passage 52 through which the pressurized aerosol composition passes when sprayed. An injection hole 51 is formed at the tip of the spray nozzle 5.

[0036] The length L (mm) of the spray passage consisting of the third passage 52 and the second passage 42 is not particularly limited. For example, the length L of the spray passage is preferably more than 32 mm, more preferably 36 mm or more. The length L of the spray passage is preferably 100 mm or less, more preferably less than 75 mm. By spraying the aerosol composition from the nozzle 51 using the aerosol device 1 having a spray passage length L of more than 36 mm, the aerosol device 1 can exert an excellent pest control effect and is less likely to contaminate the target surface. In this embodiment, the spray passage consists of the third passage 52 and the second passage 42 as described above. That is, the length L of the spray passage is the distance between the central axis P1 of the aerosol container 2 having a substantially cylindrical outer shape and the nozzle 51. More specifically, when a straight line P2 is drawn from the nozzle 51 along the spray passage, the length L is the distance between the nozzle 51 and the intersection point of the straight line and the central axis P1 of the aerosol container 2.

[0037] In the aerosol device 1 of this embodiment, the ratio (L / R) of the nozzle diameter R (mm) of the nozzle 51 to the length L (mm) of the spray passage may be more than 6.9, and is preferably 10 or more. The ratio (L / R) may be less than 75, and is preferably 70 or less. When the ratio is 6.9 or less, the aerosol composition sprayed into the target space is less likely to adhere to the wall surface, etc., and creeping pests tend to live on the wall surface. On the other hand, when the ratio (L / R) is 75 or more, the aerosol device 1 is more likely to cause liquid dripping around the nozzle, which may contaminate the floor surface, etc., or make it difficult to spray a predetermined amount into the target space.

[0038] In the aerosol device 1 of this embodiment, when a user operates the spray button, the stem 31 and the aerosol valve 3 are actuated, and the inside of the aerosol container 2 is communicated with the outside. As a result, a certain amount of the aerosol composition in the aerosol container 2 is taken out of the aerosol container 2 according to the pressure difference between the inside of the aerosol container 2 and the outside, and is sprayed from the nozzle 51 of the spray member 4.

[0039] The aerosol device 1 of this embodiment is preferably adjusted so that the amount of spray per time is 0.8 mL or more. The aerosol device 1 is preferably adjusted so that the amount of spray per time is 3.0 mL or less. By adjusting the amount of spray per time to be within the above range, the control method of this embodiment is easy to control crawling pests at the application location in the target space.

[0040] The average particle diameter (D50) of the sprayed aerosol composition is not particularly limited. For example, the average particle diameter (D50) is preferably 10 μm or more, more preferably 15 μm or more. The average particle diameter (D50) is preferably 80 μm or less, more preferably 70 μm or less. By adjusting the average particle diameter (D50) within the above range, the control method of this embodiment is easy to control crawling pests. In this embodiment, the average particle diameter (D50) means D50 (cumulative 50%) measured by a particle size distribution measuring device and analyzed by an automatic calculation processing device. Specifically, the average particle diameter (D50) refers to the average particle diameter at a position of 30 cm measured at 25°C using a laser particle size distribution analyzer (LDSA-1400A, manufactured by Tohnichi Computer Applications Co., Ltd.) with auto-start averaging (averaging count: 3, interval: 0.60 ms).

[0041] In the control method of this embodiment, the aerosol composition is sprayed into a target space using the aerosol device 1 described above. The target space is not particularly limited. The target space may be any space in which the crawling pests can live, such as a gap in a house, a kitchen, a balcony, a garage, etc. According to the control method of this embodiment, the sprayed aerosol composition can appropriately enter even a narrow space in a house (such as gaps between various furniture and electrical appliances). The aerosol composition not only floats in the target space, but also adheres to the ceiling, side walls, floor, etc., and exerts a control effect.

[0042] The area of ​​the target space is not particularly limited. For example, the area of ​​the target space is 0.1 m 2 It is preferable that the thickness is 0.12m or more. 2 More preferably, the area of ​​the target space is 2m or more. 2 Preferably less than 1.5m 2 It is more preferable that:

[0043] In particular, the aerosol device 1 of this embodiment is preferably sprayed into the target space under conditions in which a metal petri dish with a diameter of 9 cm is attached vertically to the floor surface at a position of 150 cm high on the wall in a space of 360 cm long x 360 cm wide x 250 cm high, and 1 mL of the aerosol composition is sprayed twice from a distance of 50 cm in the horizontal direction, with the adhesion rate of the active ingredient attached to the petri dish being 10 to 75%, and more preferably 15 to 70%. By spraying under such spraying conditions, the sprayed aerosol composition is likely to efficiently adhere to the target object. As a result, the aerosol device 1 exhibits excellent pest control effects.

[0044] As described above, according to the control method of this embodiment, crawling pests such as spiders can be controlled by spraying a fixed amount of the aerosol composition, and there is no contamination of the surrounding area of ​​the spray, such as the floor surface, and dripping of the liquid around the nozzle is unlikely to occur. EXAMPLES

[0045] The present invention will be described in more detail below with reference to the following examples. The present invention is not limited to these examples. Unless otherwise specified, "%" means "% by mass" and "parts" means "parts by mass".

[0046] Details of the aerosol device used are given below. Aerosol device 1: injection member (nozzle diameter R: φ1.6 mm, injection passage length L: 11 mm, nozzle cross-sectional shape: one circular nozzle), ratio (L / R): 6.9, aerosol valve (volume of metering chamber 1.0 mL) Aerosol device 2: injection member (nozzle diameter R: φ1.6 mm, injection passage length L: 16 mm, nozzle cross-sectional shape: one circular nozzle), ratio (L / R): 10.0, aerosol valve (volume of metering chamber 1.0 mL) Aerosol device 3: injection member (nozzle diameter R: φ1.6 mm, injection passage length L: 32 mm, nozzle cross-sectional shape: one circular nozzle), ratio (L / R): 20.0, aerosol valve (volume of metering chamber 1.0 mL) Aerosol device 4: injection member (nozzle diameter R: φ1.6 mm, injection passage length L: 50 mm, nozzle cross-sectional shape: one circular nozzle), ratio (L / R): 31.3, aerosol valve (volume of metering chamber 1.0 mL) Aerosol device 5: injection member (nozzle diameter R: φ1.6 mm, injection passage length L: 75 mm, nozzle cross-sectional shape: one circular nozzle), ratio (L / R): 46.9, aerosol valve (volume of metering chamber 1.0 mL) Aerosol device 6: injection member (nozzle diameter R: φ1.0 mm, injection passage length L: 70 mm, nozzle cross-sectional shape: one circular nozzle), ratio (L / R): 70.0, aerosol valve (volume of metering chamber 1.0 mL) Aerosol device 7: injection member (nozzle diameter R: φ1.0 mm, injection passage length L: 75 mm, nozzle cross-sectional shape: one circular nozzle), ratio (L / R): 75.0, aerosol valve (volume of metering chamber 1.0 mL)

[0047] The formulation of the stock solution used is shown below. · Stock solution 1: 24.5 g of permethrin was added with an appropriate amount of neothiosol (normal paraffin) and adjusted to 100 mL. · Stock solution 2: 24.5 g of permethrin was added to an appropriate amount of Toxo IPA (isopropyl alcohol) to make 100 mL.

[0048] The propellants used are shown below. ·LPG 0.49MPa (25℃): Liquefied petroleum gas ·DME: Dimethyl ether

[0049] Comparative Example 1 10 mL of concentrate 1 was filled into an aerosol container with a capacity of 289 mL, and an aerosol valve was attached. Then, 190 mL of propellant (LPG saturated vapor pressure: 0.49 MPa (25°C)) was pressurized and filled so that the mixture ratio (volume ratio) of concentrate to propellant was 5:95, and the spray member was attached to prepare an aerosol device (aerosol device 1 was used as the aerosol valve and spray member).

[0050] (Examples 1 to 50, Comparative Examples 2 to 34) Aerosol devices were produced in the same manner as in Comparative Example 1, except that the concentrate, the type of aerosol device, or the blending ratio of the concentrate and the propellant was changed as shown in Table 1.

[0051] [Table 1] *In Table 1, the amount of active ingredient ejected (mg) when sprayed twice (*theoretical value) was calculated using the formula: spray amount (mL) x blend ratio of concentrate in aerosol composition (%) x active ingredient concentration in concentrate (mg / mL).

[0052] The adhesion rate and the presence or absence of dripping were confirmed by the following evaluation methods using the aerosol devices obtained in Examples 1 to 50 and Comparative Examples 1 to 34. The results are shown in Table 1.

[0053] <Adhesion rate> A metal petri dish with a diameter of 9 cm was attached to the wall at a height of 150 cm so that the opening of the petri dish was perpendicular to the floor. An aerosol device was sprayed twice (total of 2.0 mL sprayed) from a position 50 cm away from the metal petri dish. The metal petri dish was collected, and 5 mL of an internal standard solution (di-2-ethylhexyl phthalate) was dropped onto it. The metal petri dish was washed to collect the attached active ingredient. Analysis was performed by gas chromatography (using silicone SE-30 at a column temperature of 220°C), and the amount of attached active ingredient was quantified. The adhesion rate was calculated based on the following formula. Adhesion rate (%) = (adhesion amount (mg) ÷ discharge amount (mg: * theoretical value)) x 100 *Theoretical value: Amount sprayed (mL) x Mixture ratio of the original solution in the aerosol composition (%) x Concentration of the active ingredient in the original solution (mg / mL)

[0054] <Whether or not there is dripping> The aerosol device was sprayed twice and the presence or absence of dripping around the nozzle was confirmed. (Evaluation Criteria) ○: No dripping occurred. △: A small amount of liquid dripping occurred (liquid adhered to the nozzle) ×: A lot of dripping occurred (liquid leaking from the nozzle).

[0055] As shown in Table 1, when the aerosol devices of Examples 1 to 50 were used, the adhesion rate was 10% or more, and there was no or only slight dripping around the nozzle. In addition, when the aerosol devices of Examples 1 to 50 were used to confirm the control effect against spiders (redback spiders), it was confirmed that a suitable control effect was exerted in all Examples. Specifically, when a spider was placed in a KP cup with a lid and the aerosol device was sprayed once on the back surface of the top surface (inside the container), no spider moved to the back surface of the top surface at both 7 hours and 24 hours. On the other hand, when the aerosol composition was not applied to the back surface of the top surface, the spider moved to the back surface of the top surface. This is an evaluation that utilizes the habit of spiders to move upward and stick to the surface in a closed space. When the aerosol devices of Examples 1 to 50 were used, no spiders stuck to the back surface of the top surface, which shows that the spiders were controlled (avoided) by using these aerosol devices.

[0056] On the other hand, when the aerosol devices of Comparative Examples 1, 3, 5, 7, 9, 18, 20, 22, 24, and 26, in which the ratio (L / R) of the nozzle diameter R (mm) to the length L (mm) of the spray passage was 6.9 or less, were used, the adhesion rate of the drug was low. Also, when the aerosol devices of Comparative Examples 2, 4, 6, 8, 10, 19, 21, 23, 25, and 27, in which the ratio (L / R) was 75, were used, a lot of liquid dripping occurred around the nozzle. Furthermore, when the aerosol devices of Comparative Examples 11 to 17 and 28 to 34, in which the amount of concentrate was large and the ratio of concentrate to propellant exceeded 40:60, were used, the amount of adhesion was small or liquid dripping occurred around the nozzle.

[0057] (Example 51) A 289 mL aerosol container was filled with 33.3 mL of concentrate 3 having the formulation shown in Table 2 below, and an aerosol valve was attached. Then, 66.7 mL of propellant (dimethyl ether (100%), 0.49 MPa (25°C)) was pressurized and filled, and an ejection member was attached to prepare an aerosol device (aerosol device 3 was used as the aerosol valve and ejection member).

[0058] [Table 2]

[0059] Using the aerosol device obtained in Example 51, an efficacy test against cockroaches hiding in crevices was carried out according to the following evaluation method.

[0060] <Efficacy Test> (Test insect) Smoky Brown Cockroach (Periplaneta fuliginosa) German cockroach (Blattella germanica) The insects were reared for successive generations at Earth Chemical Co., Ltd., and only adult females were used. (Test Method) FIG. 3 is a schematic perspective view of the experimental equipment in which the efficacy test was carried out. FIG. 4 is a schematic plan view of the experimental equipment in which the efficacy test was carried out. In the 8-tatami mat chamber (length 3.6 m, width 3.6 m, height 2.5 m) shown in FIG. 3 and FIG. 4, two cardboard boxes C1 (rectangular parallelepiped, L1=L2=38 cm, L3=55 cm, L4=2.5 cm) and two cardboard boxes C2 (rectangular parallelepiped, L5=L7=38 cm, L6=55 cm) were placed. Cardboard box C1 was placed at a distance of L8 (5 cm) from the corner of the chamber, and cardboard box C2 was placed at a distance of L8 (5 cm) next to cardboard box C1. The test insects were placed on the back side of the cardboard (the gap between the cardboard and the wall and the bottom of the cardboard, about 0.2 m from the bottom). 2 The animals were allowed to settle in the two locations for at least 60 seconds until they stopped coming out (20 animals were allowed to settle in each location). The aerosol device was sprayed once in each direction (approximately 0.2 m from position P shown in Figure 4 (the gap between cardboard C1 and cardboard C2, at a height of 20 cm) in the direction of the arrow. 2The test insects were all collected in a clean container, given 2% sugar water, and left to stand in a room at 25°C. The number of dead insects was counted after 24 hours, and the mortality rate was calculated. The test was carried out twice for each of the Smoky Brown cockroach and German cockroach. The results are shown in Table 3.

[0061] [Table 3]

[0062] As shown in Table 3, it was confirmed that the aerosol device of the present invention exhibits excellent knockdown and killing effects even against crawling pests that have settled in narrow spaces. In other words, it was proven that the aerosol device of the present invention can exhibit excellent effects against crawling pests hiding in furniture, electrical appliances, etc., even if these items are placed in the target space. [Explanation of symbols]

[0063] 1. Aerosol device 2. Aerosol containers 3 Aerosol valve 31 Stem 32 Quantification room 4 Injection member 41 1st aisle 42 2nd aisle 5. Injection nozzle 51 spout 52 3rd aisle C1, C2 cardboard L1~L7 Cardboard dimensions L8 Distance between wall and cardboard or distance between cardboard L Length of the injection passage La Length of the second passage Lb Length of the third passage P injection position P1 Central axis of aerosol container P2 A straight line drawn from the nozzle along the injection path R Nozzle diameter

Claims

1. A method for controlling crawling pests, comprising spraying an aerosol composition into a target space to control crawling pests, The method for controlling crawling pests comprises: an aerosol container filled with an aerosol composition containing a concentrate and a propellant in a mixing ratio (volume ratio) of 5:95 to 40:60; an aerosol valve for constant-volume spray attached to the aerosol container; and an injection member including an injection nozzle which is attached to the aerosol container via the aerosol valve for constant-volume spray, and which has an injection nozzle having an injection port at its tip for injecting the aerosol composition and a linear injection passage at one end of which the injection port is formed, the aerosol composition being injected from the injection port using an aerosol device in which the ratio (L / R) of the injection port diameter R (mm) to the injection passage length L (mm) is greater than 6.9 and less than 75.

2. 2. The method for controlling crawling pests according to claim 1, wherein the aerosol composition is sprayed from the nozzle by using the aerosol device having a spray passage length L (mm) of more than 36 mm.

3. The method for controlling crawling pests according to claim 1 or 2, comprising attaching a metal petri dish having a diameter of 9 cm perpendicularly to the floor surface at a position 150 cm high on the wall of a space having a length of 360 cm, and spraying 1 mL of the aerosol composition twice from a distance of 50 cm in the horizontal direction into the target space under conditions such that the adhesion rate of the active ingredient adhering to the petri dish is 10 to 75% immediately after spraying.

4. The crawling pest is a spider, The method for controlling crawling pests according to any one of claims 1 to 3, wherein the aerosol composition is sprayed from the nozzle using the aerosol device to control the spider.

5. an aerosol container filled with an aerosol composition containing a concentrate and a propellant; an aerosol valve for spraying a fixed amount attached to the aerosol container; and an injection member attached to the aerosol container via the aerosol valve for spraying a fixed amount, the injection member including an injection nozzle having an injection hole at its tip for spraying the aerosol composition; The injection member has a linear injection passage with the injection hole formed at one end thereof, The ratio (L / R) of the nozzle hole diameter R (mm) to the length L (mm) of the injection passage is greater than 6.9 and less than 75; The aerosol device for controlling crawling pests, wherein the blending ratio (volume ratio) of the concentrate to the propellant is 5:95 to 40:60.

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