JPH04211318A - Method for controlling mite - Google Patents

Abstract

PURPOSE:To provide a method for controlling mites in which excellent effects to the mites are exhibited. CONSTITUTION:The aforementioned method is characterized in that an aerosol agent, composed of an active ingredient solution prepared by dissolving a synergistic agent and/or an insect pest repellent as active ingredients in a solvent having a vapor pressure below the jetting pressure at ordinary temperature and a propellant and useful for controlling mites is injected into TATAMI (straw mats).

Description

[Detailed description of the invention]

0001

FIELD OF THE INVENTION The present invention relates to a method for controlling mites.

0002

[Prior Art] Conventionally, in order to exterminate insect pests and microorganisms such as dust mites on tatami mats, the tatami mats are raised and treated with sunlight outdoors without the use of chemicals, or chemicals such as insecticidal powders are used. Spraying or spraying insecticidal liquid on the tatami mats,
However, conventional methods such as those mentioned above do not have a sufficient effect on exterminating pests and microorganisms, and although it is possible to apply a liquid to the tatami, Due to insufficient penetration and expansion of the drug, a satisfactory control effect has not always been achieved.

[0003] Furthermore, due to changes in the living environment in recent years, dust mites, dust mites, etc. have been occurring in homes, which not only cause discomfort but also cause problems such as allergic asthma. Development of control methods is required.

0004

[Problem to be solved by the invention] Therefore, the present inventors
As a result of intensive research to solve the problems of the conventional technology described above, we have found that an aerosol agent for controlling mites consisting of a specific active ingredient and a specific propellant has an excellent control effect against mites. The present inventors have discovered that the present invention exhibits the following properties, and have completed the present invention.

[0005]

[Means for Solving the Problems] That is, the present invention provides an active ingredient solution and a propellant, which are obtained by dissolving a synergist and/or an insect repellent as an active ingredient in a solvent whose vapor pressure is lower than the injection pressure at room temperature. The present invention relates to a method for controlling mites, which comprises injecting an aerosol agent for controlling mites into tatami mats.

[0006]

EXAMPLES A synergist and/or an insect repellent are used as the active ingredients of the mite control agent of the present invention.

Examples of synergists include piperonyl butoxide, octachlorodipropyl ether, N-(2
- ethylhexyl)-1-isopropyl-4-methylbicyclo[2,2,2]oct-5-ene-2,3
- dicarboximide, isobornyl thiocyanoacetate, N-(2-ethylhexyl)-bicyclo[2,2,
1]-hebut-5-ene-2,3-dicarboximide, etc. can be used.

[0008] In addition, as a repellent for pests and rodents (this refers to a pest repellent in the claims), 2,3,4,5-bis(Δ-butylene)-tetrahydrofurfural, N,N-diethyl-meta-toluamide, di-normal-propylisocincolomate, di-normal-butylsuccinate, 2-hydroxyethyloctylsulfite, 2-t-butyl-4-hydroxyanisole, 3-t-butyl -
4-hydroxyanisole, cycloheximide, β-
Nitrostyrene cyanoacrylonitrile, tributyltin chloride, trinitrobenzene-aniline complex,
Naphthalene or the like can be used.

Other active ingredients of the indoor mite control agent of the present invention include phenothrin (3-phenoxybenzyl d
-cis/trans-chrysanthemate), permethrin (3-phenoxybenzyl dl-cis/trans-
3-(2,2-dichlorovinyl)-2,2-dimethyl
-1-cyclopropanecarboxylate) and resmethrin ((5-benzyl-3-furyl)methyl dl
- cis/trans- chrysanthemate) can be used. These compounds are a type of pyrethroid compounds, and because they exhibit superior mite control effects compared to other pyrethroid compounds, they can be used as active ingredients in mite control agents in the present invention. .

In the present invention, the mite control agent includes pyrethroid compounds other than phenothrin, permethrin and resmethrin, such as dl-
3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis/trans-chrysanthemer
(hereinafter referred to as allethrin), (1, 3, 4, 5, 6
, 7-hexahydro-1,3-dioxo-2-isoindolyl)methyl dl-cis/trans-chrysanthemate (hereinafter referred to as phthalthrine), 1-ethynyl-2-methyl-2-pentenyl 2,2,3,3 −
Tetramethylcyclopropanecarboxylate (hereinafter referred to as
empensuline), 1-ethynyl-2-methyl-2-pentenyl 2,2-dimethyl-3-(2',
2'-dichlorovinyl)-cyclopropane-1-carboxylate, 1-ethynyl-2-methyl-2-pentenyl 2,2-dimethyl-3-(2'-methyl-
1'-propenyl)-cyclopropane-1-carboxylate, etc. may be used in combination. In addition to the above-mentioned pyrethroid compounds, other active ingredients may be added as necessary. Examples of the active ingredient include carbamate compounds such as 2-isopropoxyphenyl-N-methylcarbamate and 1-naphthyl-N-methylcarbamate; 3-methyl-1,5- Bis(2,4-xylyl)-1,3,5-triazapenta-1,4-diene, 2,4-dinitro-6-sec
-Butylphenyldimethylacrylate, 6-methylquinoxaline -2,3-dithiocarbonate, bis(chlorphenyl)trichloroethanol, 4,4'-
Ethyl dichlorobenzilate, 1,2,4,5,6,7,
8,8-octachlor -2,3,3a,4,7,7a
-hexahydro -4,7-methanoindene, dimethyl(3-methyl-4-nitrophenyl)thiophosphate (hereinafter referred to as fenitrothion), 0,0-dimethyl -O-[3-methyl-4-(methylthio)phenyl] Thiophosphate, (2-isopropyl-4-
Methylpyrimidyl-6)-diethylthiophosphate,
Examples include dimethyldicarbethoxyethyldithiophosphate and dimethyldichlorovinylphosphate.

[0011] By using a drug containing the pyrethroid compound as an active ingredient, it is possible to effectively control the occurrence of mites such as white mites, claw mites, dust mites, and lice mites.

[0012] A bactericidal agent, a deodorizing agent, or an aromatic agent may be added to the aerosol agent for controlling mites used in the present invention.

As a bactericidal agent, 2,4,4'-trichloro-2'-hydroxydiphenyl ether, 2
, 3,5,6-tetrachloro-4(methylsulfonyl)pyridine, alkylbenzyldimethylammonium chloride, benzylmethyl {2-[2-(P-1,1,
3,3-tetramethylbutylphenoxy)ethoxy]
ethyl}ammonium chloride, 4-isopropyltropolone, N-dimethyl-N-phenyl-N'- (
Fluoromethylthio)sulfonamide, 2-(4'-
Thiazolyl)benzimidazole, N-(fluorodichloromethylthio)-phthalimide, 6-acetoxy
-2,4-dimethyl-m-dioxin, etc.
These drugs are effective against Aspergillus, Penicillium,
It is effective in controlling molds such as Chaetomium.

Examples of the deodorant include lauric acid methacrylate, and examples of the aromatic include essential oil components of rush, citronella, lemon, lemongrass, orange, eucalyptus, and lavender.

[0015] The aerosol agent for controlling mites used in the present invention may further contain various additives such as an efficacy enhancer and a desiccant (such as a superabsorbent resin), if necessary.

[0016] The aerosol agent for controlling mites used in the present invention includes, for example, at least one injection hole having at least one nozzle hole having a shape capable of piercing a tatami mat in at least a part of the circumferential surface of the body of the tubular body. The tubular body made of the above material has a substantially blind-shaped tip and is used by being filled into a tatami treatment tool having a nozzle diameter of 0.1 to 1.0 mm.

[0017] The shape of the tubular body (hereinafter referred to as the main body) is such that the tip thereof is almost blind, and the tip of the body can be easily pierced into the tatami from any direction from the front, back, or side. As long as it has a shape, it is not limited to length or size (width), but the length is preferably 4.3 to 4.7 cm in accordance with the tatami standard (5 cm thick), and the thickness is not limited. Any material can be used as long as it does not leave scratches on the tatami mat when pricked, and it is preferable from the viewpoint of usability that the inner diameter of the main body is 1.5 mm or less.

Furthermore, the main body is extendable and bendable (
(including one having a rubber tube in the middle), may be detachable, freely removable, freely rotatable in the axial direction, or may consist of a plurality of members. Materials that are compatible with these forms can be appropriately selected and used. By making it rotatable as described above, the position of the nozzle hole can be appropriately changed and used, so even when there is only one nozzle hole, it is possible to spray over a wide range, which is advantageous. Furthermore, a fitting part for the push button may be provided at the base end of the main body, so that when using an aerosol, for example, it can be easily set by simply fitting it into an existing push button or jet tube. However, it is also possible to provide a push button at the proximal end of the main body.

The area of the nozzle hole provided in the main body may be the same as or smaller than the inner diameter of the main body, and the nozzle diameter is usually in the range of 0.1 to 1.0 mm, preferably 0 mm. .3 to 0.6 mm, and when a fitting part or push button is provided as described above, the spray condition will be good if the relationship of nozzle hole diameter of push button ≧ inner diameter of main body ≧ nozzle hole diameter of main body is established. It's advantageous.

However, if more uniformity is required in a weak spray state, this does not particularly apply. The number of nozzle holes in the nozzle is determined from the above-mentioned relationship.

[0021] The shape of the injection hole of the nozzle may be not only a normal shape but also a slit shape.
(including ring-shaped); if it is vertically long, it is advantageous for spraying on each layer that makes up the tatami, and if it is horizontally long, it is suitable for wide-ranging flat treatment in all directions of the tatami. By using these in combination, more preferable spray conditions can be obtained. Moreover, it is advantageous to use a cross-shaped front face as a combined type because the advantages of both can be obtained at the same time.

[0022] Regarding the manner in which the nozzle holes are provided in the main body, at least one or more may be provided on at least one part of the outer circumferential surface of the body of the main body, or they may be provided at appropriate intervals in the longitudinal direction of the main body. In this case, it is advantageous because each layer constituting the tatami mat can be treated at once, similar to the case with the vertically elongated slit-shaped nozzle hole. Furthermore, by providing nozzle holes at positions corresponding to each layer constituting the tatami mat, it may be possible to perform the treatment with one touch. At this time, it is advantageous to provide the nozzle holes in a staggered manner, as this allows a wider range of treatment to be performed.

[0023] In the present invention, as the injection mechanism applied to the main body, any of those used for this type of application can be used, such as an aerosol type, one using various pumps, and a cylinder type. ,compressor-
It can be used in combination with other methods as appropriate. When using the cylinder, the pressure is quite high, so it is used by attaching it to a suitable spray gun. Other suitable auxiliary means may be adopted for the main body, for example, the tip of the main body can be attached and detached at an appropriate position in the longitudinal direction of the main body (of course, the proximal end is also possible) for safety when not in use. You can replace the top and bottom or left and right, or have a stopper on the main body that can slide up and down or left and right.When in use, this is used to adjust the degree to which the main body enters the tatami mat, and when not in use, the main body can be replaced. By moving the stopper towards the tip of the body, stopping when the tip is no longer visible, and fixing the body to the body with a set screw, the tip of the body can be protected and injuries caused by misuse can be avoided (Fig. (see 4).

[0024] Furthermore, by storing the main body in and out of the container and retracting a part of the container, the tubular body can be used, and when not in use, the main body is stored in the container. Although it is safe because the container has a stopper, an appropriate stopper may be provided on the container just in case. Further, instead of housing the body in the container, the body itself may be used in combination with, for example, a bellows upper cover and a stopper for preventing the cover from shrinking.

In the present invention, the sprayer as one of the spray mechanisms described above may be of an automatic spray type with an intermittent valve. In this case, if you set the main body of the sprayer toward the place where cockroaches are infested, such as the gap behind the tatami mat, the aerosol can be automatically and Can be injected intermittently.

In the present invention, the hole diameters of the main body nozzle, push button nozzle, and valve stem are 0.3 to 0.6 mm.
and the hole diameter of the injection valve housing and the vapor tap are in the range of 0.3 to 0.5 mm, and at least one selected from the injection valve housing and dip tube is A configuration can be adopted in which the difference between the hole diameter of either one and the hole diameter of the vapor tap is within 0.1 mm. In this case, it is advantageous to use a filling liquid containing 30 to 60% by volume of the active ingredient solution when the active ingredient solution and propellant are combined.

[0027] In the case of an aerosol agent that is normally used upright, the housing has a hole diameter of 0.7 to 1.5 mm, and the dip tube has a hole diameter of 1 to 3.5 mm. The hole diameter of the par tap is 0.25 to 0.4
mm, and the difference greatly exceeds 0.1 mm. If this is used in an inverted position, a large amount of propellant will be sprayed, and the ratio with the active ingredient solution in the aerosol can will be disrupted. By keeping this difference within 0.1 mm, for example, the effectiveness of insecticides will be uniform, and the propellant will not run out first and only the active ingredient solution will remain without being sprayed, making it more accurate. There is an advantage that the injection amount per unit time for standing and inverted positions can be made almost the same.

[0028] The active ingredient solution as used in the present invention refers to a solvent whose vapor pressure is substantially less than the injection pressure at room temperature, such as hexane, 3,3,4-trimethylnonane, cyclohexane, kerosene, Petroleum solvents such as naphtha, normal paraffin, isoparaffin, and liquid paraffin, chlorinated hydrocarbons such as dichloroethane and trichloroethane, ethyl alcohol, isopropyl alcohol,
Alcohols and ether derivatives such as ethylene glycol, and solvents such as water; at least one of the above-mentioned active ingredients, allethrin, permethrin, and phenothrin; organophosphorus insecticides such as DDVP and fenitrothion; A bamate insecticide, a synergist such as piperonyl butoxide, and a deodorizing or deodorizing agent are dissolved as they are or are emulsified with a surfactant.

Further, as the propellant, for example, fluorocarbons (such as fluorocarbon-11, fluorocarbon-112, and fluorocarbon-113), liquefied petroleum gas, dimethyl ether, etc. are used alone or in combination.

Next, an example of the formulation of the aerosol agent for controlling mites used in the present invention will be explained.

Formulation Example 1 0.3 parts by weight of at least one of phenothrin, permethrin and resmethrin, 7 parts by weight of xylol, and 7.7 parts by weight of deodorized kerosene were mixed and dissolved. After filling this into an aerosol container and attaching a valve part, the valve part was sealed and 85 parts by weight of liquefied petroleum gas was filled under pressure to obtain an aerosol of a tick control agent.

Next, the method for controlling mites of the present invention will be explained in more detail based on examples, but the present invention is not limited to these examples.

Examples 1 to 6 150 ml of a kerosene solution containing 1.33% of the pyrethroid compound permethrin and 150 ml of liquefied petroleum gas
1 was filled into an aerosol can with a content of 390 ml and sealed with a valve as shown in Table 1 to obtain an aerosol. Attach a button to this, connect the main body, and perform an injection test (3
0 seconds), and the difference between standing upright and inverted is within 10%, 20
Acceptable within %.

The results are also listed in Table 1.

[0035]

[Table 1]

Examples 7 to 10 In Example 1, the propellant was changed to 70 ml of dimethyl ether.
An aerosol was obtained in the same manner as in Example 1, except that 80 ml of liquefied petroleum gas was used. Table 2 shows the physical properties of the obtained aerosol agent.

[0037]

[Table 2]

Next, a tatami treatment tool that can be suitably used in the mite control method of the present invention will be explained. FIG. 1 is a partially cutaway front view showing an example of a tatami treatment tool used in the mite control method of the present invention, FIGS. 2 and 3 are cross-sectional views showing another example, and FIG. 4 is a still further example. It is a partially cutaway front view showing the.

In FIGS. 1 to 4, 1 is a main body, and a plurality of injection holes 2 are provided on the circumferential surface of the body of the main body 1, and the tip of the main body 1 has a shape that can be pierced into a tatami mat. There is. When in use, by connecting it to an appropriate aerosol, cylinder, or other spraying device, and inserting it into the tatami mat to spray it, the drug is released from the nozzle nozzle in an extremely good manner, as is clear from the test results described below. It is possible to obtain a spray state and an extremely good diffusion distribution state in the tatami mat. In addition, very good results have been obtained in terms of insecticidal effect, and the device has a unique structure as an insecticidal tool for tatami mats.

[0040] In such a tatami processing tool, the method and shape of the nozzle holes may be divided into a plurality of stages (see Figs.
4).

Next, the shape of the main body 1 is such that a fitting part (cap type, which is advantageous because it can be directly attached to a push button, etc.) is provided at the base end of the main body 1 to fit into the push button or injection tube of the sprayer (see FIG. 1). ), or a push button may be provided (see FIGS. 2 and 3). In this case, in Fig. 2, when the main body 1 is attached to the stem of a normal sprayer and inserted into the tatami mat, the upper surface 4a of the push button 4 becomes the pressing surface, so the surface of the tatami mat can also be used as the pressed surface. This makes it easy to use, and the one shown in Fig. 3 is advantageous when the sprayer is used with the sprayer lying on its side.

The tatami treatment tool shown in FIG.
A tubular cover 5 is slidably provided on the body of the body, a screw 5b having a length reaching the circumferential surface 1a of the main body 1 is provided in the middle of the circumferential surface 5a of the cover 5, and the cover is screwed at an appropriate position. It is configured to be able to stop 5. In this case, by tightening the screw 5b at a point where the tip of the main body 1 is hidden from the lower end of the tubular cover 5, the tip of the main body 1 can be protected and the danger from its use can be removed, and it can be slid freely. This is advantageous because the depth (the degree of entry (insertion) of the nozzle into the tatami mat) can be adjusted.

Diffusion tests and insecticidal efficacy tests using the above-mentioned tatami treatment tool will be explained below.

Diffusion test 1 Tatami treatment tool shown in Figures 2 and 3 (length 4.5 cm, inner diameter 0.75 mmφ, number of nozzle holes 4×4, nozzle hole diameter 0
．． 4 mmφ) was connected to a 300 ml aerosol, and the drug was injected for 20 seconds from point A shown in FIG. 5 on the prepared tatami mat (90 cm x 90 cm x 5 cm). The shaded area shows the permeation and diffusion state treated with the drug. After leaving the treated tatami for 2 days, the sections A1-3, A'1-3, B1-3, and B'1-3 shown in Figure 6 were cut (5cm x 5cm x 5cm) into 2-3mm pieces. Grind into pieces and mix well. From this sample, 5 g was taken and analyzed for the concentration of the impregnated insecticidal component. The results are shown in Table 3.

[0045]

[Table 3]

From the results shown in Table 3, it can be seen that, especially when the main body of the present invention shown in FIG. 2 is used, the chemical solution is almost uniformly dispersed in the mat.

Diffusion test 2 As shown in FIG. 7, 90 cm x 180 cm x 5 cm
Prepare a tatami mat of
m) at each point B and C of the main body (length: 4.5 cm,
Inner diameter: 0.75 mm, nozzle hole diameter: 0.2 mm x 8 divided into 4 stages, consisting of a combination of jetting towards the front, back, left side and right side, and directions rotated 45 degrees from this. ) was attached to a regular 300 ml aerosol and sprayed for 20 seconds (10 ml) at each point to inject the chemical into the tatami. The results are shown in Figures 9-11. 9 to 11 are side views of the long side of the tatami mat shown in FIG. 7. FIG.
FIG. Note that the shaded area in the figure indicates the part of the tatami mat where the chemical solution was diffused.

As is clear from the hatched areas in FIGS. 9 to 11, it can be seen that the chemical solution is uniformly diffused in the thickness direction of the tatami mat.

Diffusion experiment 3 Place a new tatami (45 cm x 45 cm) in the center of a vat filled with water to prevent the mites from escaping, and after confirming that the moisture content of the tatami exceeds 10%, saturate the woolly mites. 2g of culture medium (per approx. 10,000 head/g)
was planted and stored at a temperature of 25% and humidity of 90% RH.

After about two weeks, when woolly mites were confirmed on the surface of the tatami, the test chemicals (3 g of permethrin, 150 ml of the solvent shown in Table 4) and liquefied petroleum gas (150 ml) were added.
According to the usage instructions, inject 0ml into the tatami from one place in the center of the tatami for a predetermined period of time, or apply 4 ml to the surface of the tatami.
It was sprayed uniformly from a height of 0 to 50 cm for a predetermined period of time. Black paper (before and 1, 3 and 7 days after treatment)
10 cm x 10 cm) were placed on the center and ends of the tatami, and after 6 hours, the number of mites that had crawled onto the black paper was counted. In the same manner as above, the number of mites crawling onto the black paper was counted for untreated Tatami and used as a comparison.

[0051] The water-based aerosol contains 3 g of permethrin, 6 g of surfactant, and 150 m of purified water.
150 ml of dimethyl ether and 150 ml of dimethyl ether were used.

The above results are shown in Table 4.

[0053]

[Table 4]

Insecticidal efficacy test body (length: 5 cm, inner diameter: 0.75 mm, nozzle hole position: 5 mm, 15 mm, 25 mm, 40 mm from the base end)
The number of nozzle holes is 2 x 4, the diameter of the nozzle hole is 0.2 mmφ), and this is done by using two nozzle holes at opposite locations on the circumferential surface of each nozzle.
Attach it to a 300ml aerosol (containing 2% by weight of fenitrothion and 0.5% by weight of resmethrin as active ingredients) and hold it in the center of a prepared tatami mat (90cm x 90cm x 5cm) for 20 seconds (10ml) to inject the drug (fenitrothion as an active ingredient). After injecting 200 mg of resmethrin and 50 mg of resmethrin, a 5 cm x 5
Cut a small piece of cm x 5 cm, crush the cut part into 2 to 3 mm pieces, mix well, and then put 5 g of it into a Petri dish.
Fifty adult woolly mites were introduced. This temperature is 20
The cells were placed in a thermostatic chamber at a temperature of 80-85% and cultured for 10 days. After 10 days, 500 mg of the solution was taken out and the number of mites living there was observed using a stereomicroscope. The results are shown in Tables 5 and 6. The results for the untreated plot are also shown in Table 5 as a control.

[0055]

[Table 5]

[0056]

[Table 6]

[0057]

[Effects of the Invention] When using the method for controlling mites of the present invention, the agent is connected to an aerosol and inserted into the tatami mat to be sprayed. A very good spray condition can be obtained from the nozzle hole, and a very good diffusion distribution condition can be obtained in the tatami mat. In addition, very good results have been obtained in terms of insecticidal effect, and it can be suitably used as an insecticide for tatami mats.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an example of a tatami treatment tool used in the mite control method of the present invention.

FIG. 2 is a sectional view showing another example of a tatami treatment tool used in the mite control method of the present invention.

FIG. 3 is a sectional view showing another example of a tatami treatment tool used in the mite control method of the present invention.

FIG. 4 is a partially cutaway front view showing yet another example of the tatami treatment tool used in the mite control method of the present invention.

FIG. 5: 90c used in the experiment of the mite control method of the present invention
It is a plan view of a tatami mat measuring m x 90 cm x 5 cm.

FIG. 6: 90c used in the experiment of the mite control method of the present invention
It is a plan view of a tatami mat measuring m x 90 cm x 5 cm.

FIG. 7 is a plan view of a tatami mat used in an experiment of the mite control method of the present invention.

8 is a side view of the long side of the tatami mat shown in FIG. 7. FIG.

9 is a cross-sectional view taken along line XX in FIG. 8. FIG.

FIG. 10 is a cross-sectional view taken along line Y-Y in FIG. 8;

11 is a cross-sectional view taken along the Z-Z line in FIG. 8. FIG.

FIG. 12: 90 microorganisms used in the experiment of the mite control method of the present invention
It is a plan view of a tatami mat measuring cm x 90 cm x 5 cm.

[Explanation of symbols]

1 Main body 2 Nozzle hole

Claims (1)

[Claims] 1 An aerosol agent for controlling mites consisting of a propellant and a synergist and/or pest repellent dissolved in a solvent whose vapor pressure is less than the injection pressure at room temperature is injected into the tatami mat. A tick control method characterized by: