Bug-proof chemicals volatilization tool

Abstract

To provide a bug-proof chemicals volatilization tool that improves a repellent effect, an extermination effect or an attraction effect against bugs such as ticks and clothing bugs.SOLUTION: A bug-proof chemicals volatilization tool 1 comprises a cotton sheet that is impregnated with either fatty acids with 6-18 carbons or at least one kind selected from among fatty acid ester, a pyrethroid compound and an essential oil. Characteristically, the basis weight of the cotton sheet is 10-250 g / m2.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a pest drug diffuser for attracting, repelling, or killing pests such as mites that inhabit rugs, carpets, tatami mats, etc. placed indoors with appropriate humidity and temperature maintained, bedding such as futons, blankets, and pillows, and clothes moths such as clothes moths, casemaking clothes moths, casemaking clothes moths, and casemaking clothes moths that damage clothes stored in wardrobes and closets.

Background Art

[0002] Conventionally, mites such as dust mites, flour mites, grain itch mites, bamboo mites, claw mites, dust mites, flesh mites, and house dust mites have widely inhabited rugs, carpets, tatami mats, etc. placed indoors with appropriate humidity and temperature maintained, and bedding such as futons, blankets, and pillows. It is said that fine particles generated by crushing the dead bodies of mites become allergens and cause various allergic reactions such as atopic dermatitis, bronchial asthma, allergic conjunctivitis, and allergic rhinitis. In recent years, the airtightness of houses has improved, and the indoor temperature and humidity have become an environment suitable for the activities of clothes pests such as clothes moths, casemaking clothes moths, casemaking clothes moths, and casemaking clothes moths.

[0003] In order not to generate allergens that cause allergic reactions due to pests such as mites, and to prevent damage to clothes, various tools are known for capturing mites in such a living environment and preventing mites and clothes pests from approaching rugs, bedding, clothes, etc.

[0004] For example, Patent Document 1 describes a mite attractant in which a non-woven fabric is impregnated with a mite attractant to adhere thereto in order to capture pests such as mites.

[0005] In Patent Document 2, in order to achieve an acaricidal effect, a fabric or a coating sheet of non-woven fabric impregnated with an organic acaricide in one layer of a multi-layer structure is described.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, in the mite attractant of Patent Document 1, the non-woven fabric is impregnated with a mite attractant, and in the coating sheet of Patent Document 2, the non-woven fabric is impregnated with an acaricide. There is a problem that it is desired to volatilize more of these chemicals of the mite attractant or acaricide to improve the attracting effect on mites or the repellent effect or extermination effect on mites and clothing pests.

[0008] Therefore, an object of the present invention is to provide a pest chemical volatilizer with improved repellent effect, extermination effect, or attracting effect on pests such as mites and clothing pests.

Means for Solving the Problems

[0009] 〔1〕That is, the present invention is a pest chemical volatilizer characterized by comprising a cotton sheet impregnated with at least one selected from fatty acid esters, pyrethroid compounds, essential oils, or a fatty acid having 6 to 18 carbon atoms.

[0010] 〔2〕And the basis weight of the cotton sheet is 10 to 250 g / m 2 and it is the pest chemical volatilizer according to the above 〔1〕.

[0011] 〔3〕The pest repellent device according to 〔1〕or 〔2〕above, characterized in that the thickness of the cotton sheet is 0.01 to 10 mm.

[0012] 〔4〕The pest repellent device according to 〔1〕or 〔2〕above, characterized in that in the cotton sheet, the fiber directions intersect.

Advantages of the Invention

[0013] According to the present invention, the repellent effect or control effect on pests such as mites and clothing pests can be improved, or the attracting effect can be improved.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0015] Hereinafter, embodiments of the pest repellent device of the present invention will be described in detail. In the description, when there is a notation "~" indicating a range, it includes the upper and lower limits.

[0016] The pest repellent device of the present invention is composed of a cotton sheet impregnated with at least one selected from fatty acid esters, pyrethroid compounds, essential oils, or any of fatty acids having 6 to 18 carbon atoms.

[0017] The fatty acid esters, pyrethroid compounds, essential oils, etc. used in the pest repellent device of the present invention gradually volatilize at a normal temperature of about 15 to 40 °C in the use environment, repelling pests such as mites and clothing pests so as not to approach, or controlling them by killing pests depending on their types and concentrations.

[0018] As the fatty acid ester, a fatty acid ester obtained from a fatty acid having 10 to 20 carbon atoms and an alcohol having 1 to 4 carbon atoms is preferred. Specifically, butyl stearate, methyl myristate and the like are more preferred.

[0019] As the essential oil, specifically, essential oils extracted from plants such as grapefruit, geranium, rosemary, anise, ambrette, ylang-ylang, orange, cananga, chamomile, cardamom, cajuput, clary sage, clove, coriander, cypress, sandalwood, cedarwood, citronella, juniper berry, ginger, spearmint, sage, tea tree, nutmeg, neroli, pine needle, basil, patchouli, palmarosa, fennel, black pepper, petitgrain, vetiver, peppermint, bergamot, marjoram, mandarin, lemon eucalyptus, eucalyptus, copaiba, lime, lavender, lemon, lemongrass, rosewood, shell ginger, cinnamon, mint are preferred. And, essential oils extracted from one of these plants can be blended, or essential oils extracted from two or more plants can be blended and used.

[0020] The essential oils obtained from the above plants contain essential oil components which are various volatile compounds. Grapefruit contains d-limonene, myrcene, α-pinene, etc. Geranium contains citronellol, geraniol, linalool, etc. Rosemary contains α-pinene, camphor, 1,8-cineole, etc. Anise contains (E)-anethole, limonene, anisaldehyde, etc. Artemisia contains 1,8-cineole, thujone, borneol, camphor, pinene, artemisinin (sesquiterpene lactone) linalool, nerol, etc. Ylang-ylang contains linalool, β-caryophyllene, germacrene D, etc. Orange contains limonene, myrcene, β-bisabolene, etc. Ylang-ylang contains caryophyllene, geranyl acetate, terpineol, etc. Chamomile contains farnesene, chamazulene, α-bisabolol oxide B, etc. Cardamom contains 1,8-cineole, α-terpinyl acetate, limonene, etc. Cajuput contains 1,8-cineole, α-terpineol, p-cymene, etc. Clary sage contains linalyl acetate, linalool, germacrene D, etc. Clove contains eugenol, β-caryophyllene, eugenyl acetate, etc. Coriander contains d-linalool, camphor, α-pinene, etc. Cypress contains α-pinene, δ-3-carene, etc. Sandalwood contains cis-α-santalol, cis-β-santalol, epi-β-santalol, etc. Cedarwood contains thujopsene, α-cedrene, cedrol, etc. Citronella contains geraniol, limonene, citronellol, camphene, citronellal, geranyl acetate, α-pinene, α-terpineol, etc. Juniper berry contains α-pinene, myrcene, β-farnesene, etc. Ginger contains ar-curcumene, α-zingiberene, β-sesquifelandrene, etc.Spare mint contains (-)-carvone, dihydrocarvone, 1,8-cineole, etc. Sage contains α-thujone, β-thujone, camphor, etc. Tea tree contains terpinene-4-ol, γ-terpinene, α-terpinene, etc. Nutmeg contains α-pinene, sabinene, β-pinene, etc. Neroli contains linalool, limonene, β-pinene, etc. Pine needle contains α-pinene, β-pinene, myrcene, etc. Basil contains linalool, methyl chavicol, β-caryophyllene, etc. Patchouli contains patchoulialcohol, α-patchoulene, β-caryophyllene, etc. Palmarosa contains geraniol, geranyl acetate, linalool, etc. Fennel contains (E)-anethole, limonene, methyl chavicol, etc. Black pepper contains β-3-caryophyllene, δ-3-carene, limonene, etc. Petitgrain contains linalyl acetate, linalool, α-terpineol, etc. Vetiver contains vetiverol, vetiven, α-vetivol, etc. Bergamot contains limonene, linalyl acetate, linalool, etc. Marjoram contains terpinene-4-ol, cis-sabinene hydrate, para-cymene, etc. Mandarin contains limonene, γ-terpinene, β-pinene, etc. Lemon eucalyptus contains citronellal, citronellol, citral, etc. Eucalyptus contains 1,8-cineole, α-pinene, limonene, aromadendrene, p-cymene, t-pinocarveol, globulol, etc. Copaiba contains β-caryolefin, α-humulene, α-copaene, t-α-bergamotene, germacrene D, cadinene, α-bisabolene, γ-muurene, β-elemene, σ-elemene, etc. Lime contains limonene, γ-terpinene, β-pinene, etc. Lavender contains linalyl acetate, linalool, (Z)-β-ocimene, etc. Lemon contains limonene, β-pinene, γ-terpinene, etc.Lemongrass contains geranial, citral, elemol, etc. Rosemary contains linalool, α-terpineol, cis-linalool oxide, etc. Peppermint contains l-menthol, l-menthone, menthofuran, etc. Cinnamon contains cinnamaldehyde, t-2-methoxycinnamaldehyde, coumarin, etc. Alpinia zerumbet leaves contain 1,8-cineole, terpinene-4-ol, p-cymene, etc. Mint contains l-menthol, l-menthone, menthofuran, etc.

[0021] Pyrethroid compounds are components contained in pyrethrum and their derivatives, including both natural products extracted by methods such as extraction from plants, etc., and synthetic compounds synthesized by organic synthesis techniques. Specifically, as pyrethroid compounds, natural pyrethroids include pyrethrum extract, pyrethrin I <(1R,3R)-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid (1S)-2-methyl-4-oxo-3-(2Z)-2,4-pentadienyl-2-cyclopenten-1-yl ester>, pyrethrin II <(1R,3R)-3-[(1E)-3-methoxy-2-methyl-3-oxo-1-propenyl]-2,2-dimethylcyclopropanecarboxylic acid (1S)-2-methyl-4-oxo-3-(2Z)-2,4-pentadienyl-2-cyclopenten-1-yl ester>, cinerin I <(1R,3R)-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid (1S)-3-(2Z)-(2-butenyl)-2-methyl-4-oxo-2-cyclopenten-1-yl ester>, cinerin II <(1R,3R)-3-[(1E)-3-methoxy-2-methyl-3-oxo-1-propenyl]-2,2-dimethylcyclopropanecarboxylic acid (1S)-3-(2Z)-(2-butenyl)-2-methyl-4-oxo-2-cyclopenten-1-yl ester>, jasmolin I <(1R,3R)-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid (1S)-2-methyl-4-oxo-3-(2Z)-2-pentenyl-2-cyclopenten-1-yl ester>, jasmolin II <(1R,3R)-3-[(1E)-3-methoxy-2-methyl-3-oxo-1-propenyl]-2,2-dimethylcyclopropanecarboxylic acid (1S)-2-methyl-4-oxo-3-(2Z)-2-pentenyl-2-cyclopenten-1-yl ester>, and synthetic pyrethroids include allethrin I <2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid 2-methyl-4-oxo-3-(2-propenyl)-2-cyclopenten-1-yl ester>, allethrin II <3-(3-methoxy-2-methyl-3-oxo-1-propenyl)-2,2-Methyl-4-oxo-3-(2-propenyl)-2-cyclopenten-1-yl 2,2-dimethylcyclopropanecarboxylate, phthalothrin (alias; D-tetramethrin) <(1,3-dioxo-4,5,6,7-tetrahydroisoindolin-2-yl)methyl = 2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropane-1-carboxylate>, resmethrin <(5-benzyl-3-furyl)methyl = 2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropanecarboxylate>, phenothrin <3-phenoxybenzyl = 2-dimethyl-3-(methylpropenyl)cyclopropanecarboxylate>, permethrin <3-phenoxybenzyl = 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate>, cyfluthrin <cyano(3-phenoxyphenyl)methyl = 2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropanecarboxylate>, etofenprox <4-(4-ethoxyphenyl)-4-methyl-1-(3-phenoxyphenyl)-2-oxapentane>, metofluthrin <2,2-dimethyl-3-(prop-1-en-1-yl)cyclopropanecarboxylic acid = 2,3,5,6-tetrafluoro-4-(methoxymethyl)benzyl>, profuthrin <(1R,3R)-2,2-dimethyl-3-[(Z)-1-propenyl]cyclopropanecarboxylic acid = 2,3,5,6-tetrafluoro-4-methylbenzyl>, transfluthrin <(1R,3S)-3-[(E)-2,2-dichlorovinyl]-2,2-dimethylcyclopropanecarboxylic acid = 2,3,5,6-tetrafluorobenzyl>, cyhalothrin <cyano(4-fluoro-3-phenoxyphenyl)methyl = 3-(2,2-dichlorovinyl)-2,2-Dimethylcyclopropane-1-carboxylate, empenthrin, etc. are preferred. Among them, chrysanthemum extract, permethrin, phenothrin, allethrin, phthalthrin, resmethrin, metofluthrin, transfluthrin, profluthrin, empenthrin are more preferred, and further, chrysanthemum extract, metofluthrin, transfluthrin, profluthrin, empenthrin, permethrin, phenothrin are most preferred. Also, the above pyrethroid compounds can be used alone or in combination of two or more. Note that chrysanthemum extract is a component extracted from pyrethrum with a solvent and contains pyrethrin I, pyrethrin II, etc.,

[0022] And in addition to the above fatty acid esters, pyrethroid compounds, and essential oils, meta-diamide compounds such as broflanilide (N-[4-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)-2-bromo-6-(trifluoromethyl)phenyl]-3-(methylbenzoyl amino)-2-methylbenzamide) can be used to achieve a repellent effect or a control effect.,

[0023] At least one selected from fatty acid esters, pyrethroid compounds, essential oils, etc. is preferably impregnated in the cotton sheet in an amount of 0.1 to 200 mg / m 2 and more preferably impregnated in an amount of 0.2 to 150 mg / m 2 When these compounds are impregnated in the above amounts, pests such as mites and clothing pests can be effectively repelled or controlled.,

[0024] The fatty acids having 6 to 18 carbon atoms used in the pest drug volatilizer of the present invention are drugs that gradually volatilize at room temperature of about 15 to 40 ° C in the use environment and attract mites. As the fatty acids having 6 to 18 carbon atoms, linear fatty acids, fatty acids having branched chains, saturated fatty acids, and unsaturated fatty acids can be used. Specifically, as the linear saturated fatty acids, caproic acid, enanthic acid, caprylic acid (also referred to as "octanoic acid"), pelargonic acid, capric acid, lauric acid, myristic acid, pentadecylic acid, palmitic acid, margaric acid, and stearic acid are preferable. And as the saturated fatty acids having branched chains, octylic acid, isostearic acid, etc. are preferable. And as the linear unsaturated fatty acids, palmitoleic acid, oleic acid, linoleic acid, linolenic acid, etc. are preferable.

[0025] The fatty acids having 6 to 18 carbon atoms are preferably impregnated in the cotton sheet in an amount of 0.1 to 200 mg / m 2 and more preferably in an amount of 0.5 to 150 mg / m. 2 When the fatty acids having 6 to 18 carbon atoms are impregnated in the above amount, pests such as mites can be well attracted.

[0026] The cotton sheet used in the pest drug volatilizer of the present invention is a base material of the pest drug volatilizer, and is a member formed of cotton and impregnated with at least one selected from fatty acid esters, pyrethroid compounds, and essential oils, or any of the fatty acids having 6 to 18 carbon atoms. The cotton sheet makes it easier for at least one selected from fatty acid esters, pyrethroid compounds, and essential oils, or the fatty acids having 6 to 18 carbon atoms impregnated in the cotton sheet to volatilize, and can improve the repellent effect, control effect, or attracting effect respectively. Further, when the cotton sheet is impregnated with the fatty acids having 6 to 18 carbon atoms, mites can be allowed to enter therein to capture pests such as mites, and furthermore, pests such as mites that have entered the cotton sheet can be held inside to prevent allergens from leaking to the outside. Note that the cotton sheet may be formed only of cotton, or may be formed by mixing cotton with other fibers.

[0027] The basis weight of the cotton sheet is preferably 10 to 250 g / m 2 and more preferably 20 to 200 g / m 2 If the basis weight of the cotton sheet is within this range, as described above, at least one selected from fatty acid esters, pyrethroid compounds, essential oils, etc. impregnated in the cotton sheet, or a fatty acid having 6 to 18 carbon atoms is likely to volatilize, and the repellent effect, knockdown effect, or attracting effect can be improved respectively.

[0028] The thickness of the cotton sheet is preferably 0.01 to 10 mm, and more preferably 0.05 to 9 mm. If the thickness of the cotton sheet is within this range, at least one selected from fatty acid esters, pyrethroid compounds, essential oils, etc. impregnated in the cotton sheet, or a fatty acid having 6 to 18 carbon atoms is likely to volatilize, and the repellent effect, knockdown effect, or attracting effect can be improved respectively. Note that the thickness of the cotton sheet is the thickness measured without applying a force in the thickness direction of the cotton sheet to compress it.

[0029] In the cotton sheet, it is preferably produced by a method such as the spunlace method of entangling fibers only with a jet water stream. At this time, a parallel method in which the directions of cotton fibers are aligned in approximately the same direction, a cross method in which they cross, etc. are preferable. In particular, when the cross method in which the directions of cotton fibers cross is adopted, since the fibers are overlapped in an oblique direction, the balance of strength in the longitudinal and transverse directions of the cotton sheet is improved and it is less likely to break, which is more preferable.

[0030] Further, the cotton sheet may be bleached or unbleached. Additionally, the cotton sheet may be degreased with an organic solvent or not degreased. Further, the cotton sheet can be made into a dark color that is likely to attract mites. For example, it is more preferably a dark color with low brightness such as black, gray, brown, reddish-brown, dark red, dark yellow, or dark green, and most preferably black.

[0031] In the pest drug volatilizer of the present invention, a covering sheet that covers the entire cotton sheet can also be provided. The covering sheet is in the form of a bag that encloses the cotton sheet and is preferably a sheet-like member with a basis weight of 5 to 25 g / m 2 through which pests can pass. For example, the cotton sheet can be enclosed by placing it in a single covering sheet formed in a bag shape and closing its mouth. Such a covering sheet can prevent the fibers constituting the cotton sheet from scattering outside. Further, when the pest drug volatilizer of the present invention is used for capturing pests, it can make it difficult for pests to escape outside, make it difficult for pests to be visually recognized from the outside, and reduce the discomfort of the user.

[0032] Also, the basis weight of the covering sheet is preferably 5 to 25 g / m 2 and more preferably 10 to 20 g / m 2 If the basis weight of the covering sheet is within this range, when the pest drug volatilizer of the present invention is used for capturing pests, pests can enter inside, and further, as described above, it is possible to prevent the fibers constituting the cotton sheet from scattering outside, etc.

[0033] As the covering sheet, it preferably has gaps of a predetermined size so that pests can pass through. Specifically, non-woven fabrics, woven fabrics, etc. having gaps of 0.01 to 2 mm, more preferably 0.05 to 1 mm are preferred.

[0034] The thickness of the covering sheet is preferably 0.05 to 5 mm, more preferably 0.1 to 2 mm. If the thickness of the covering sheet is within this range, as described above, it is easy to induce pests inside, and it is possible to prevent the pests from exiting from the inside to the outside to some extent.

[0035] The color of the covering sheet is preferably a dark color that is easy to attract pests, more preferably a dark color with low brightness such as black, gray, brown, reddish-brown, dark red, dark yellow, dark green, etc., and most preferably black.

Example

[0036] 〔Attraction effect test〕 The following experiment was conducted to confirm the mite attraction effect in the pest drug volatilizer of the present invention.

[0037] <Example 1> Referring to JIS L 1920 "Test method for anti-mite performance of textile products", the mite attractiveness was tested as shown in Fig. 1. That is, first, a cotton sheet (basis weight 160 g / m 2 with a diameter of about 40 mm and a thickness of 8 mm) was impregnated with octanoic acid in an amount of 1 mg / m 2 to obtain a pest drug volatilizer 1, and it was spread out in a first petri dish 2 with a diameter of about 40 mm. Then, the mite medium 3 was evenly spread in a second petri dish 4 with a diameter larger than that of the first petri dish 2, and 10,000 equivalent mites of Dermatophagoides farinae were placed. The first petri dish 2 was placed on top of the center of the second petri dish 4 and left standing at a temperature of 23 to 27°C and a humidity of 70 to 80% RH for 24 hours. Then, the number of Dermatophagoides farinae invading the pest drug volatilizer 1 in the first petri dish 2 was counted. When these tests were conducted 3 times, the mites that invaded into the first petri dish 2 were 447, 489, and 613, and the arithmetic mean was 516.

[0038] <Examples 2 to 4> Similar to Example 1, an attraction effect test of *Tetranychus kanzawai* was conducted using a predetermined cotton sheet. The basis weight, thickness of the cotton sheet, type of fatty acid having 6 to 18 carbon atoms, and impregnation amount of fatty acid having 6 to 18 carbon atoms are as shown in Table 1. The mites that invaded into the first petri dish 2 are also collectively shown in Table 1.

[0039] <Comparative Example 1> Instead of the cotton sheet, a non-woven fabric made of polypropylene (basis weight 40 g / m 2 , thickness 0.35 mm) impregnated with octanoic acid in an amount of 120 mg / m 2 was used to conduct an attraction effect test of *Tetranychus kanzawai* in the same manner as in Example 1. Then, when these tests were conducted three times, the number of *Tetranychus kanzawai* that invaded the specimen in the first petri dish 2 was 285, 277, and 211, and the arithmetic mean was 258.

[0040] Regarding the attraction effect on *Tetranychus kanzawai*, those with the number of *Tetranychus kanzawai* invading being 500 or more were evaluated as excellent (◎), those with 400 or more and less than 500 were evaluated as good (○), those with 300 or more and less than 400 were evaluated as insufficient (△), and those with less than 300 were evaluated as poor (×).

[0041] These results are shown in Table 1.

[0042]

Table 1

[0043] 〔Repellent effect or control effect test〕 The following experiment was conducted to confirm the repellent effect or control effect of mites in the pest drug volatilizer of the present invention.

[0044] <Example 5> With reference to JIS L 1920 "Test Method for Acarid-proof Performance of Textile Products", the repellency or control property of mites was tested as shown in Fig. 1. That is, first, a cotton sheet with a diameter of about 40 mm (basis weight 160 g / m 2, at a thickness of 8 mm, impregnate with 1 mg / m of butyl stearate to obtain the pest drug volatilizer 1, and spread it evenly in the first petri dish 2 with a diameter of about 40 mm. Then, spread the mite medium 3 evenly in the second petri dish 4 with a diameter larger than that of the first petri dish 2, and place 10,000 equivalent mites of Dermatophagoides farinae. Place the first petri dish 2 on top of the center of the second petri dish 4 and let it stand at a temperature of 23 - 27 °C and a humidity of 70 - 80% RH for 24 hours. Then, measure the number of Dermatophagoides farinae invading the pest drug volatilizer 1 in the first petri dish 2. When these tests were conducted 3 times, the number of mites invading the first petri dish 2 was 18, 20, and 28, and the arithmetic mean was 22. 2 And, the mite medium 3 is evenly spread in the second petri dish 4 with a diameter larger than that of the first petri dish 2, and 10,000 equivalent mites of Dermatophagoides farinae are placed. The first petri dish 2 is placed on top of the center of the second petri dish 4 and left standing at a temperature of 23 - 27 °C and a humidity of 70 - 80% RH for 24 hours. Then, the number of Dermatophagoides farinae invading the pest drug volatilizer 1 in the first petri dish 2 is measured. And when these tests were conducted 3 times, the mites that invaded the first petri dish 2 were 18, 20, and 28, and the arithmetic mean was 22.

[0045] <Examples 6 - 8> In the same manner as in Example 5, a test of the repellent effect or control effect against Dermatophagoides farinae was conducted using a predetermined cotton sheet. Note that the basis weight and thickness of the cotton sheet, the type of at least one selected from fatty acid esters, pyrethroid compounds, and essential oils, and the impregnation amount of at least one selected from fatty acid esters, pyrethroid compounds, and essential oils are as shown in Table 2. The mites that invaded the first petri dish 2 are also summarized in Table 2.

[0046] <Comparative Example 2> Instead of the cotton sheet, a non-woven fabric made of polypropylene (basis weight 40 g / m 2 , thickness 0.35 mm), impregnated with an amount of butyl stearate of 120 mg / m 2 For the specimen thus impregnated, a test of the repellent effect or control effect against Dermatophagoides farinae was conducted in the same manner as in Example 1. And when these tests were conducted 3 times, then, the number of Dermatophagoides farinae invading the specimen in the first petri dish 2 was 72, 59, and 66, and the arithmetic mean was 66.

[0047] <Examples 9 - 11> As in Example 5, a test of the repellent effect or extermination effect against Dermatophagoides farinae was conducted using a specified cotton sheet. The basis weight and thickness of the cotton sheet, the type of at least one selected from fatty acid esters, pyrethroid compounds, and essential oils, and the impregnation amount of at least one selected from fatty acid esters, pyrethroid compounds, and essential oils are as shown in Table 3. The number of mites that invaded the first petri dish 2 is also shown in Table 3.

[0048] <Comparative Examples 3 to 4> As shown in Table 3, a nonwoven fabric made of polypropylene (basis weight 40 g / m) was used instead of the cotton sheet. 2 , thickness 0.35 mm) or polyethylene nonwoven fabric (basis weight 40 g / m 2 , thickness 0.3 mm) with pyrethrin at 0.25 mg / m 2 The specimens impregnated with the amount of the composition were subjected to a test for the repellent effect or extermination effect against Dermatophagoides farinae in the same manner as in Example 5. These tests were performed three times. The number of mites that invaded the first petri dish 2 is also shown in Table 3.

[0049] <Examples 12 to 14> As in Example 5, a test of the repellent effect or extermination effect against Dermatophagoides farinae was conducted using a specified cotton sheet. The basis weight and thickness of the cotton sheet, the type of at least one selected from fatty acid esters, pyrethroid compounds, and essential oils, and the impregnation amount of at least one selected from fatty acid esters, pyrethroid compounds, and essential oils are as shown in Table 4. The number of mites that invaded the first petri dish 2 is also shown in Table 4.

[0050] <Comparative Examples 5 to 6> As shown in Table 4, a nonwoven fabric made of polypropylene (basis weight 40 g / m) was used instead of the cotton sheet. 2 , thickness 0.35 mm) or polyethylene nonwoven fabric (basis weight 40 g / m 2 , thickness 0.3 mm) and 0.25 mg / m 2For the specimens impregnated with the amount that becomes, in the same manner as in Example 5, a test for the repellent effect or the extermination effect of the citrus red mite was conducted. And these tests were conducted 3 times. The mites that invaded into the first petri dish 2 are also collectively shown in Table 4.

[0051] Regarding the repellent effect or the extermination effect against the citrus red mite, those with less than 10 invaded citrus red mites were rated as excellent (◎), those with 10 or more and less than 30 invaded citrus red mites were rated as good (○), those with 30 or more and less than 50 invaded citrus red mites were rated as insufficient (△), and those with 50 or more invaded citrus red mites were rated as poor (×).

[0052] These results are shown in Tables 2 to 4.

[0053]

Table 2

[0054]

Table 3

[0055]

Table 4

[0056] <Example 15> Next, the following experiment was conducted to confirm the repellent effect or the extermination effect of the clothing pests in the pest drug diffuser of the present invention. Specifically, as shown in FIG. 2, the repellency or extermination property of the clothes moth, which is a clothing pest, was tested. That is, first, on a cotton sheet (basis weight 40 g / m 2 , thickness 0.35 mm) with a diameter of about 40 mm, 0.25 mg / m of the artemisia princeps extract 2It is impregnated with an amount to become a pest repellent diffuser 1 and laid on a petri dish 5 with a diameter of about 90 mm. Then, about 0.1 g of wool moslin 6 that can be used as food for the rice weevils is placed on the petri dish 5, and 10 rice weevils (3 weeks after hatching) are placed in the same petri dish 5. Then, it was left standing for one week at a temperature of 23 to 27 °C and a humidity of 55 to 65% RH. Then, the weight of the wool moslin 6 was measured, and the value obtained by subtracting the weight reduction rate before and after the test from 1 was calculated as the feeding damage prevention rate. And, using the pest repellent diffuser 1 not used as described above, a test was conducted in the same manner, and the feeding damage prevention rate obtained was used as a control. Using the feeding damage prevention rate in that control as a correction coefficient, the corrected feeding damage prevention rate in this example was calculated. As a result, the corrected feeding damage prevention rate was 85.4%.

[0057] <Examples 16 to 20> In the same manner as in Example 15, a test of the repellent effect or control effect of the rice weevils was conducted using a predetermined cotton sheet. The basis weight and thickness of the cotton sheet, at least one type selected from fatty acid esters, pyrethroid compounds, and essential oils, and the impregnation amount of at least one selected from fatty acid esters, pyrethroid compounds, and essential oils are as shown in Table 5. And the corrected feeding damage prevention rates in these tests are also collectively shown in Table 5.

[0058] <Comparative Examples 7 to 10> As shown in Table 5, instead of the cotton sheet, a non-woven fabric made of polypropylene (basis weight 40 g / m 2 , thickness 0.35 mm) or a non-woven fabric made of polyethylene (basis weight 40 g / m 2 , thickness 0.3 mm) was impregnated with an amount of 0.25 mg / m 2 of chrysanthemum extract or phenothrin, and a test of the repellent effect or control effect of the rice weevils was conducted in the same manner as in Example 15. And the corrected feeding damage prevention rates in these tests are also collectively shown in Table 5.

[0059]

Table 5

[0060] Regarding the repellent effect or extermination effect against mites, those with a corrected damage prevention rate of 90% or more were rated as excellent (◎), those with a rate of 80% or more and less than 90% were rated as good (○), those with a rate of 70% or more and less than 80% were rated as insufficient (△), and those with a rate less than 70% were rated as poor (×).

[0061] From the above results, it became clear that by using a cotton sheet compared to a non-woven fabric made of polyolefin such as polypropylene, it is possible to produce a pest agent diffuser that can improve the attracting effect of mites, or the repellent or extermination effect of mites and silkworm mites.

Explanation of symbols

[0062] 1 ··· Pest agent diffuser 2 ··· First petri dish 3 ··· Mite medium 4 ··· Second petri dish 5 ··· Petri dish 6 ··· Wool muslin

Claims

1. The pesticide volatilizer is characterized by comprising a cotton sheet impregnated with at least one selected from fatty acid esters, pyrethroid compounds, essential oils, or fatty acids having 6 to 18 carbon atoms.

2. The cotton sheet has a basis weight of 10 to 250 g / m 2 2. The pesticide volatilizer according to claim 1,

3. 3. The pesticide volatilizer according to claim 1, wherein the cotton sheet has a thickness of 0.01 to 10 mm.

4. 3. The pesticide volatilizer according to claim 1 or 2, wherein the cotton sheet has fibers arranged in a cross direction.

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