JPS63270610A - Composition for controlling wood insect pests - Google Patents

Abstract

PURPOSE:To obtain the title composition which is composed of an agent control ling wood insect pests such as fenitrothione and an intensifier such as piperonyl butoxide, thus being applied to any desired places in extremely shortened work ing time without wood surface staining and danger of fire. CONSTITUTION:The subject composition contains less than 75wt.% of an agent combating wood insect pests such as termites or wood borers such as chlordene, cypermethrin, decamethrin, 7-15wt.% of a preservative such as 4- chlorophenyl-3'-iodopropargyl formal, about the same amount as the controlling agent, of an intensifier such as piperonyl butoxide, N-propyl isome, MGK-264, sinepyrin 222, and preferably 5-20wt.% of an organic solvent such as hexane. The composition is a combination of an insecticide and a preservative and can be readily applied to the places to which conventional agent can be applied with difficulty, in the form of fine particles with aid of liquefied carbon dioxide, thus manifesting increased effect.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a wood pest control agent composition.

Conventional techniques and their problems The most important factors that cause the deterioration of wood used or used in buildings such as houses include feeding damage caused by termites, bark beetles, etc., and decay due to the proliferation of various bacteria. .

However, as measures to control the above-mentioned wood pests, the method of applying an oil or emulsion containing a termite control agent etc. to the surface of the treated wood with a brush or by spraying it using an appropriate sprayer is carried out exclusively. However, these methods have various drawbacks as described below, and are still unsatisfactory as practical methods. In other words, these methods naturally limit the areas to which the coating can be applied, especially in the case of wood used in buildings such as houses, in the ceiling, under the floor, or in the gaps between walls and wallboards (covered with wall material). It is difficult to treat the back surface of wallboards, etc., and the coating operation is complicated and takes a long time. Furthermore, the oils, emulsions, etc. used in these methods themselves contain relatively large amounts of solvents.
It has the drawback of creating stains on its surface, significantly reducing the value of the wood, and contaminating walls, etc. Furthermore, since emulsions are used after being diluted with water, the wood itself is exposed to high humidity conditions, which may actually encourage the growth of mold. Furthermore, as a method of preventing mold on wood, methods of applying oils, emulsions, etc. containing active preservative ingredients have been proposed in substantially the same manner as above, but these also have substantially the same drawbacks as above. Furthermore, in the field of insecticides, in addition to the above-mentioned oils and emulsions, aerosols using propellants such as liquefied petroleum gas such as Freon, dimethyl ether, propane, n-butane, and isobutane are also known. When used to treat wood, a large amount of solvent and propellant gas are injected at the same time, which poses a particularly high risk of fire. In any case, no special chemicals have been known to prevent the deterioration of wood, and pest control agents, fungicides, etc. have only been applied separately and in limited areas, and the side bottoms are not sufficient. At present, we cannot expect any positive effects.

Means for Solving the Problems In view of the above-mentioned current situation, the present inventors have found that it can be easily applied to various locations where prevention of wood deterioration is required, takes extremely short working time, and is effective against contamination of the wood surface, fire, etc. As a result of intensive research with the aim of providing a new treatment method that is free from danger and has sufficient effects, it has been discovered that treatment meeting the above purpose can be carried out by using a composition having the following specific composition, The present invention has now been completed.

That is, the present invention uses a control agent for wood pests such as termites (fenitrothion, etc.) and potency enhancers such as pipet dirubutoxide, N-propylisome, MGK-264, Cinepirin 222, Cinepirin 500, Riesen 384,
The present invention relates to a wood pest control agent composition containing at least one selected from I BTA and $-421.

Based on the fact that the composition of the present invention has the above-mentioned specific composition,
By applying this by spraying, for example, the following extremely excellent effects can be exhibited.

(1) Easy application with very short spraying time. In particular, the processing time is shortened to about 1/1 to 1/2 o or less compared to an oil solution of a similar formulation (one in which the same active ingredient compound is dissolved in a solvent such as kerosene).

(2) It can be applied very easily to areas where it is difficult to apply known insecticides or termite control agents, such as gaps between walls and wallboards, and the desired effect can be achieved.

(3) Extremely excellent termite and bark beetle control and antiseptic effects. This effect is not only due to the combination of the wood pest control agent and preservative as active ingredients, but also because these are sprayed in the form of fine particles by the gas pressure of liquefied carbon dioxide and sufficiently diffused at a uniform concentration within the closed space. This is due to the diffusion effect and the cooling effect caused by the injection and evaporation of the liquefied carbon dioxide gas, and is unprecedented.

(4) Does not cause contamination of the wood surface. Although known oils, liquids, etc. cannot avoid the occurrence of stains due to the liquid infiltrating through joints, cracks, bonded parts, etc. of walls and boards, the present invention can reliably avoid such problems. This is not only because the amount of solvent in the composition of the present invention is small, but even when it is contained in a relatively large amount, the amount of the composition itself to be applied is very small. This is because it also has an infiltration prevention effect.

Although the mechanism for preventing infiltration by liquefied carbon dioxide gas is currently not very clear, it is thought that it is because organic solvents and other infiltrating substances are entrained and scattered as the injected liquefied carbon dioxide gas evaporates.

(5) By using liquefied carbon dioxide as a propellant, the closed space to which the composition of the present invention is applied becomes a carbon dioxide atmosphere, and its inert action can reliably prevent the risk of fire.

In the composition of the present invention, the wood pest control agents include various agents conventionally known to have a controlling effect on wood pests such as termites and bark beetles, such as pyrethroid, organochlorine, organophosphorus, etc. Insect repellents, tobacco-based, boron-based, chlorphenyl-based, arsenic-based, chlornaphthalene-based, cyclobenzene-based, organic fluorine-based insecticides, and other conventional pest repellents can all be used. Representative examples of these are illustrated below.

0 (2,3,4,5,6,7,8,8-octachloro-2,3,3a,4.7.7a-hexahydro-4,7
-Methanoindene) (-Roldane, hereinafter referred to as Chlordane) 03-Allyl-2-methylcyclopent-2-ene-4
-one-1-yl dQ-cis/trans-chrysanthemate (generic name allethrin; trade name vinarin; manufactured by Sumitomo Chemical Co., Ltd.) 03-allyl-2-methylcyclopent-2-en-4-one-1 -yl d-cis/trans-chrysanthemate (trade name Pinamine Forte, manufactured by Sumitomo Chemical Co., Ltd.) Od-3-allyl-2-methylcyclopent-2-en-4-one-1-yl d- Trans-chrysanthemate (trade name Exlin: manufactured by Sumitomo Chemical Co., Ltd.) 03-allyl-2-methylcyclopent-2-ene-4
-on-1-yl d-trans-chrysanthemate (
-Ship name Bioallethrin) ON-(3,4,5,6-tetrahydrophthalimido)-methyl dQ-cis/trans-chrysanthemate (-Ship name Phthalthrin: Trade name neopinamine or tetramethrin: Manufactured by Sumitomo Chemical Co., Ltd. ) 05-benzyl-3-furylmethyl d-cis/trans-chrysanthemate (-ship name: Smetrin; trade name: Risuronfturte: manufactured by Sumitomo Chemical Co., Ltd.) 02-Methyl-5-(2-propargyl) -3-Furylmethyl chrysanthemate (-ship name Flamethrin) 03-phenoxybenzyl 2,2-dimethyl-3-(
2',2'-dichloro)vinylcyclopropane carboxylate (-ship name Vermethrin; trade name Exmin: manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as Exmin) 03-phenoxybenzyl d-cis/trans-crisantemate (-ship Fetuthrin: Trade name Sumithrin: Manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as Sumithrin) 0α-cyano-3'-phenoxybenzyl α-isopropyl-4-chlorophenylacetate (-Ship name Fuenvalerate: Trade name Sumicidine: Sumitomo Chemical Co., Ltd. Co., Ltd., hereinafter referred to as Smithidin) 0 (R,S)-α-cyano-3-phenoxybenzyl (1R,18)-cis/trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclo Propane carboxylate (-Ship name: Cypermethrin, hereinafter referred to as Cypermethrin) 0α-Cyano-3-phenoxybenzyl d-cis/transucrysanthemate (-Ship name: Cyphenotrin, hereinafter referred to as Cyphenothrin) 0 (S
)-α-cyano-3-phenoxybenzyl (1R, cis)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate (-ship name Decamethrin, hereinafter referred to as Decamethlin) oo, 0- Dimethyl 0-(2,2-dichloro)vinyl phosphate (-ship name dichlorvos) 00.0-dimethyl 0-(3-methyl-4-nitrophenyl)thionophosphate (-ship name) 1 ditrothion, hereinafter fenitrothion 00.0-diethyl 0-2-isopropyl-4-methyl-pyrimidyl-(6)-thiophosphate (-Ship name: Diazinon, hereinafter referred to as diazinon) oQ, o-dimethyl 5-(1,2-dicarboethoxy ethyl)-dithiophosphate (-ship name malathion) oo, O-diethyl O-(3-,tF')-2-'7
Enyl 2day-pyridazin-6-yl) phosphorothioate (-ship name pyridafenthione, hereinafter referred to as pyridafenthione) 0 chlorpyrifos 0 phoxim ○ fenthion 0 prothiophos 0 isophenphos OO-isopropoxyphenyl Methyl carbamate (
-Ship name: Probox, hereinafter referred to as Vibon> 0O-(4-bromo-2,5-dichlorophenyl)0.
0-dimethylphosphorothioate (-ship name Promophos) 02.3,4.5-bis(△2-butylene)-tetrahydrofurfural (trade name Lepper 111: manufactured by Yoshitomi Pharmaceutical Co., Ltd.) ON, N-diethyl-meta-toluamide ( DET) 0 di-n-propyl isocincomeronate (trade name Lepper 333: manufactured by Yoshitomi Pharmaceutical Co., Ltd.) 0 di-n-butyl succinate (DNBS> 02-hydroxyethyl octyl sulfide (sulfide) 0 pyrimidine derivative (5-chloro -4-amino-2,6
0-piperidine derivatives (1-hexanoyl-piperidine, etc.)
1-pentanoyl-2,6-dimethyl-piperidine, etc.) 0-xanthogenic acid derivatives (〇-ethyl-8-tert-butyl-sulfenyl xantoate, etc.) 0-azepine derivatives (1-pentanoylhexahydro-
1H-azepine, etc.) 0-pipecoline derivatives (1-hexanoyl 3-pipecoline, 1-hexanoyl 2-pipecoline, etc.) 0-morpholine derivatives (4-hexanoyl-2゜6-dimethylmorpholine, etc.) 0-pyrrolidine derivatives (1-octanoyl pyrrolidine, etc.) Quinones (naphthoquinone, benzoquinone, etc.) Dihydric alcohols (2-butyl-2-ethyl-1゜3-propanediol, 2-ethyl-1,3-hexanediol,
butoxypolypropylene glycol, etc.) Among the above, especially chlordane, exmin, smithrin, sumicidin, cypermethrin, cyphenothrin, decamethrin, Vibon, Lepper 111, DET
, Lepper 333, DNBS and sulfide are preferred. These wood pest control agents can be used alone or in combination of two or more. The above-mentioned wood pest control agent is used in the composition of the present invention in an amount of 75% by weight or less, thereby achieving the desired effect of the present invention.

Further, as the preservative used in the present invention, any of various conventionally known preservatives can be used. Representative examples are shown below.

02.4.4'-Trichloro-2'-hydroxydiphenyl ether (Irgasan DP300, manufactured by Ciba Geigy, hereinafter referred to as Irgasan DP300) 02.3.5.6-Tetrachloro-4-(methylsulfonyl)pyridine (Dowsil 5-13, Dowsil 5-13, hereinafter referred to as Irgasan DP300) Chemical Co., Ltd.) 04-chlorophenyl-3'-iodopropargyl formal (IF-1000, Nagase Sangyo Co., Ltd., hereinafter referred to as I)
F-1000) O alkylbenzyl dimethyl ammonium chloride (benzalkonium chloride, manufactured by Nikko Chemicals Co., Ltd.) O benzyl dimethyl (2-(2-(p-1,1°3.3)
-Tetramethyl butylphenoxy)ethoxy)ethyl)ammonium chloride (benzethonium chloride, manufactured by Sankyo Co., Ltd.) 04-Inpropyltroborone (hinokitiol, manufactured by Takasago International Corporation, hereinafter referred to as hinokitiol) ON, N-dimethyl-N-phenyl -N'-(Fluorodichloromethylthio)sulfonamide (Priventol A4, manufactured by Bayer AG) 02- (4'-thiazolyl)
Benzimidazole (TBZ, manufactured by Hokko Chemical Co., Ltd., hereinafter referred to as TBZ) ON-(fluorodichloromethylthio)-phthalimide (Priventol A3, manufactured by Bayer AG, hereinafter referred to as Priventol A3) 06-acetoxy-2,4-dimethyl-m -Dioxine (Dioxin, manufactured by Thibaudan)Q Tributyl phosphate (hereinafter referred to as TBP)0Ethylenebis(dithiocarbamate)Zinc (Zineb, manufactured by Rohm and Haas)OEthylenebis(dithiocarbamate)Manganese (Maneb, Rohm Zinc, Mancozeb complex compound (Mancozeb, manufactured by Rohm and Haas) 0 Bis(dimethyldithiocarbamic acid) Ethylene bis(
dithiocarbamic acid) dizinc (polycarbamate, manufactured by Tokyo Organic Chemical Co., Ltd.) ○Bis (dimethylthiocarbamoyl (thiram, manufactured by Rohm and Haas)) 0 crotonic acid
2,6-sinitro 4-octylphenyl reactive isomer mixture (DPC, manufactured by Rohm and Haas) ON-trichloromethylthiotetrahydrophthalimide (cabtane, manufactured by Sandaisha, hereinafter referred to as cabtane) 02,3-dicyano-1,4-dicyano Thianthraquinone (
dithianone, manufactured by Merck & Co.) 02,4-dichloro-6-(0-chloroanilino)-S
-Triazine (Triazine, manufactured by Fuji Kaseiha Co., Ltd.) OS-n-butyl s'-p-tert-butylbenzyl N-3-pyridyldithiocarbonimidate (Denmart, manufactured by Sumitomo Chemical Co., Ltd.) ON- (3', 5' -dichlorophenyl)-1.

2-dimethylchloropropanedicarboximide (Sumilex) 0bis(chlorophenyl)trichloroethanol (Kelsene) o6-methylsilquinoxaline-2,3-dithiocarbonate (Molestan) Otetrachloroisophthalonitrile (Daconyl) 0methyl-1- (Butylcarbamoyl)-2-benzimidazole carbamate O Plasticidin S-benzylaminobenzenesulfonate O Streptomycin hydrochloride O Kasugamycin hydrochloride O Cycloheximide The above preservatives may also be used singly or in combination. The above may be used in combination. The blending amount is usually 5 to 20% by weight, preferably 7 to 15% by weight,
This can produce the desired effect.

In the composition of the present invention, the potency enhancers include piperonyl butoxide, N-propylisome, MGK-264.
It is important to use at least one selected from , Cinepirin 222, Cinepirin-500, Riesen 384, IBTA and S-421, and this is usually preferably used in the same amount as the wood pest control agent. This makes it possible to achieve the desired effect of the present invention.

The composition of the present invention may also contain an organic solvent, although this is not particularly necessary. The use of the organic solvent may improve the penetration and adhesion of the wood pest control agent and preservative into the treated wood and promote the desired effect.
It is preferable to use a usual combination. The organic solvent is usually selected mainly for its miscibility and affinity with the above-mentioned active ingredient compounds, as well as for the absence of bad odor, low toxicity, not interfering with good spray properties, and appropriate volatility. selected with consideration. Typical examples include petroleum solvents such as hexane, 3,3.4-i-limethylnonane, cyclohexane, kerosene, naphtha, n-paraffin, and isoparaffin, and chlorinated hydrocarbons such as dichloroethane and trichloroethane. Examples include alcohols such as , ethyl alcohol and isopropyl alcohol, and ethers.

These are usually used singly or in a mixture of two or more. The amount to be used is suitably determined from a range of up to 45% by weight, and is usually preferably in a range of about 5 to 20% by weight.

The composition of the present invention may further optionally contain various commonly used additives such as volatilization rate improvers, deodorants, fragrances, etc., if necessary. As losing streak rate improving agents, phenethyl isothiocyanate, dimethyl pimixate, etc.
Examples of the deodorant include lauric acid methacrylate (LMA), and examples of the fragrance include citral, siloneral, and neutradol.

The composition of the present invention contains 5 to 30% by weight of liquefied carbon dioxide together with predetermined amounts of the above-mentioned wood pest control agent, preservative, efficacy enhancer, organic solvent, and other additives as necessary. Required. This liquefied carbon dioxide gas not only acts as a propellant for the above-mentioned active ingredient compound and others, but also has the effect of preventing infiltration of organic solvents and the like into the wood to be treated, as described above. When applied, it can also have a cooling effect that lowers the temperature of the applied atmosphere. This cooling effect, together with the original preservative effect of the above preservatives, makes it possible to more completely kill various types of bacteria that are the biggest cause of decay in treated wood, and also to protect against pests such as termites and bark beetles. It also reduces the motility of wood pests, and synergizes with the control action of pesticides against secondary wood pests. Especially,
In the present invention, these various effects are achieved by using only about 5% by weight of liquefied carbon dioxide, and this effect is truly surprising. However, if the amount of liquefied carbon dioxide gas is less than 5% by weight, the above-mentioned effects will be difficult to achieve. Moreover, if it exceeds 30% by weight, the pressure in the processing space will increase rapidly, causing safety problems in handling. For example, when injecting into the gap between a wall and a wallboard, the pressure may damage the wallboard. There is a risk that this may occur. Moreover, the liquefied carbon dioxide gas has poor miscibility with preservatives and the like, causing separation and making uniform spraying difficult. Usually the above liquefied carbon dioxide gas is about 5 to 1
It is appropriate that the content is within the range of 5% by weight.

The composition of the present invention is generally prepared by adding the active ingredient compound and other additives to a suitable pressure-resistant container, and filling the container with a predetermined amount of liquefied carbon dioxide. This is carried out by connecting a nozzle directly or through an appropriate indirect member such as a pipe or hose, and spraying the contents of the container from the nozzle. In this case, the shape of the nozzle may be arbitrary, such as a conventional long nozzle shape, a needle shape, or a hollow drill for drug injection, depending on the location where the composition of the present invention is applied, such as floors, walls, pillars, soil, and closed spaces.

Further, the diameter of the nozzle is usually preferably 0.1 mm to 0.6 mm, but is not particularly limited thereto.

The present invention also provides a method for preventing wood deterioration, in which the composition of the present invention is sprayed into a closed space to form the closed space, or the sprayed particles are contacted and adhered to wood existing in the space. It's something. Here, the closed space in which the composition of the present invention is sprayed refers to a space that is entirely or partially partitioned by wood to be treated, such as a gap between a wall and a wall board, or an appropriate partition, and in which there is a space to be treated. Any space containing wood may be used. The composition of the present invention can be sprayed into such a space by, for example, making a hole in a part of the partition constituting the space, inserting a nozzle into the space through the hole in the same manner as above, and
This is carried out by spraying the composition from the nozzle.

In this case, the spray amount, spray time, etc. of the composition of the present invention may be approximately the same as those described above. That is, a total of about 5 to 500 g of the active ingredient compound is usually sprayed per 1 m3 of a closed space, or a total of 7 active ingredient compounds are sprayed per 1 m2 of the wood surface to be treated.
The amount to be sprayed may be about 8 g. The amount of active ingredient sprayed will vary slightly depending on the internal pressure of the pressure-resistant container filled with the composition of the present invention, the diameter of the nozzle to be sprayed, etc.
Usually very long, around 3 seconds.

It is done in a short time. This time is about 1 hour longer than when applying the same amount of active ingredient by brushing a conventional oil or emulsion.
From this point alone, the method of the present invention is extremely efficient and practical. Moreover, according to the above method of the present invention, the temperature inside the closed space is instantly lowered by spraying the liquefied carbon dioxide gas used as the spray agent, and the temperature condition is maintained at about 10 to 20 degrees Celsius lower than normal room temperature, resulting in this cooling effect. The synergistic effect between this and the original effect of spraying the active ingredient compound produces extremely excellent effects that have never been seen before.

EXAMPLES Examples and comparative examples are given below to explain the present invention in more detail.

Example 1 Chlordane 490Q (23.9% by weight), IF-1
0001250 (12.2% by weight), S-421 (23
, 9 times%), n-paraffin 100CI (9.8% by weight), and 310g (30.2% by weight) of liquefied carbon dioxide gas in a pressure-resistant cylinder (according to the standards of the High Pressure Gas Control Act). A composition of the present invention filled in a cylinder was obtained.

Examples 2 to 4 The same procedure as in Example 1 was carried out except that the types of wood pest control agents, preservatives, efficacy enhancers, and organic solvents and the blending ratios of these and liquefied carbon dioxide gas were changed to those shown in Table 1 below. , various compositions of the present invention shown in Table 1 were obtained. Table 1 also shows the case of Example 1 above.

Comparative Examples 1 to 8 Comparative compositions Nos. and ah having compositions shown in Table 1 below were obtained in the same manner as in Example 1.

<Spraying Test> The fluidity and spraying conditions of the compositions obtained in each of the above Examples and Comparative Examples were observed. The results are shown in Table 2. However, each item was evaluated based on the following criteria.

Liquidity evaluation criteria ◎...Very good Q...Good△・
...Can be used
...Can be used 1m
A box with a width of 10 cm and a height of 1 m is prepared, and a slit with a width of 3 mm is provided at the center of the upper surface of the box in the longitudinal direction.

A nozzle is inserted into the box from one end of the slit, and the composition of the present invention or the comparative composition (Example NO.
1 to 43 and Comparative Example Nos., a to h) were sprayed for 6 seconds (approximately 209 as an active ingredient compound). Injection 1 month and 6
After several months, the box was disassembled, and a piece of plywood with a diameter of 1Q cm and a height of 2
A 0cm cylinder was placed, and 20 adult termites collected from rotten wood and 20 adult yellowtail beetles that had been subcultured on artificial feed were placed in the cylinder, and wood treated with each test composition and 24 hours after contacting the
The number of dead insects of each test insect was counted and the insect killing rate was determined. Table 2 shows the killing rate of each test insect one month after spraying.

Table 2 also shows the results of visual observation of the presence or absence of infiltration (presence or absence of stains) of each composition onto the wood surface treated with each test composition. Table 3 shows the insect killing rate when using treated wood 6 months after spraying.

2. Preservation test The compositions of the present invention and comparative compositions listed in Table 1 were injected under reduced pressure into a test specimen (cedar sapwood 2 x 2 x 1 cm) for 1 second. Extract 2%, glucose 1%, peptone 0.5%) were used to test the antiseptic efficacy of lignin-degrading bacteria (Cawaratake) and cellulose-degrading bacteria (Ostricus undulis), which were grown on soil and grown at 25°C. After forced rot for 3 weeks, efficacy was measured based on the degree of mycelial growth on the specimen and the presence or absence of a decrease in compressive strength using the following indicators.

+... No mycelial growth was observed on the test specimen, and the compressive strength was no different from that of healthy material.

±... Slight growth of hyphae was observed on the test specimen, or the compressive strength was slightly reduced.

-...The growth of hyphae was clearly observed on the test specimen, or the compressive strength was clearly reduced.

The results are also listed in Table 2 below.

Table 3 Comparative Example 9 600 mQ of Chlorua 22% oil solution (12% by weight of chlortin and 88% by weight of kerosene) was sprayed from one end of the slit on the inner surface of the same box used in the insecticidal efficacy test,
The same test was repeated. The above-mentioned antiseptic test was also conducted. The results are shown in Tables 4 and 5 below.

Comparative Example 10 Chlorthene 40% emulsion (chlorthene 40% by weight, kerosene 40% by weight, inpropyl alcohol 10% by weight)
and emulsifier 10% by weight) was diluted 20 times, and the diluted solution 8
The same operation as in Comparative Example 9 was repeated using 00 mG.

The results are shown in Tables 4 and 5 below.

Table 4 (1 month later) Table 5 (6 months (1) Insecticidal test ■> In the same box used in the above insecticidal efficacy test ■, 20 adult termites and 20 adult yellowtail beetles were collected from rotten wood in advance. Each of the heads was placed in a two-class box, and the compositions of the present invention (Examples N0.1 to 43) and the oils and emulsions described in Comparative Examples 9 and 10 were applied through the nozzle in the same manner as in the above insecticidal efficacy test ①. Each was sprayed or sprayed. Five minutes after the spraying or spraying was finished, the number of test insects in each box was counted, and the knockdown rate (%) was determined.

As a result, when using the composition of the present invention, a knockdown rate of 95% or more was observed, whereas when using the oil and emulsion of Comparative Examples 9 and 10, the knockdown rate was 30%, respectively.
It was nothing more than

(that's all) 21 no

Claims (1)

[Claims] (1) A control agent for wood pests such as termites (fenitrothion, etc.) and piperonyl butoxide, N as an efficacy enhancer.
-Propylisome, MGK-264, Cinepirin 2
22, Cinepirin 500, Risen 384, IBTA
and S-421.