JPS6042302A - Method for using smoking fumigant - Google Patents

Abstract

PURPOSE:To control the vermin in an underground water tank, etc., easily, at a low dose, without exterminating the microorganisms of the activated sludge nor causing the problem of fish toxicity of the waste water, in a short time even in the case of the treatment of an underground water tank having complicate structure, by fumigating the underground water tank with a smoking fumigant, and leaving the tank to stand for >=30min. CONSTITUTION:A smoking fumigant is evaporated in an underground water tank, a sanitary tank or water contained therein, and left to stand for >=30min to exterminate the imagoes, chrysalises, and larvae of vermin living in said underground water tank, sanitary tank and water or water surface contained therein. The smoking fumigant is e.g. 3-allyl-2-methylcyclopent-2-en-4-on-1-yl dl- cis/trans- chrysanthemate (ganeral name: allethrin, commercial name: Vinamin), etc. The smoking fumigant may be used in combination with an organic foaming agent emitting nitrogen gas, carbon dioxide gas, etc. The concentration of the active component in the atmosphere in the treating space is preferably 5- 50mg/m<3>.

Description

[Detailed description of the invention] The present invention relates to methods of using fume transpiration agents.

Conventionally, methods for controlling insect pests, insects, and larvae in underground water tanks and septic tanks and their water include:
Highly concentrated chemicals were distributed using a spray method. Alternatively, residual spraying has been used to treat the problem, but not only is it not sufficiently effective, but it also kills active bacteria, and there are various problems caused by the large amount of chemicals used, such as fish toxicity in wastewater. At present, this method is not used very often because it causes harmful effects and requires time for control work, so there was a strong desire for an alternative method.

The present invention was completed as a result of intensive research aimed at eliminating the above-mentioned conventional drawbacks. That is, the present invention simultaneously controls adults, pupae, and larvae of pests that live on the walls of underground water tanks and septic tanks, in water, and at the water's edge.
71. Place the smoke transpiration agent in the above limited space. This method relates to a method of using a fumigation agent, which is characterized in that it is cooked in a 1:f ratio of at least 30 smokers.

According to the method of use of the present invention, all of the above-mentioned disadvantages of conventional chemical spraying and residual r@fog have been completely eliminated.In other words, in terms of effectiveness, it is possible to exterminate all adults, pupae, and larvae at the same time. In particular, new knowledge was obtained that, in addition to the usual method of controlling adult insects using smoke agents, it can also effectively exterminate the larvae of midges and butterfly flies that live in water.In terms of the environment, this method can: Use very small amounts of drugs
As a result, activated sludge bacteria were not killed, and the problem of fish toxicity in wastewater was solved at once. In terms of work, conventional spray nozzles for spraying chemicals have been inserted through manholes, making it difficult to spray chemicals to every corner of the septic tank. Spraying chemicals has been extremely difficult both technically and in terms of time, but with this method, the chemicals can be sufficiently distributed even in underground water tanks with complex structures by simply smoking near manholes. It has many characteristics such as a sufficient extermination effect can be obtained by short-time treatment.

As the fumigation agent in the present invention, any of the various agents conventionally used for the purpose of exterminating pests can be used. The following are examples of typical mulberry fields.

L Insecticide 03-allyl-2-methylcyclopent-2-ene-4
-on-1-iν d1! l-cis/toonesu chrysantemate (generic name: allethrin; trade name: pinamin; manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as h).

03-7S I lake-methylcyclopent-2-ene-
4-on-1-yl d-cis/Tofunsucrysanthemate (trade name: Pinamin Forte, manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as Pinamin Forte) Od-3-AliI-2-methyMcyclopenta-2 -en-4-one-1-I d-transucrysantemate (trade name Exlin, manufactured by Sumitomo Chemical Co., Ltd.,
03-Ali/I/-2-methylcyclopent-2-en-4-one-1-yl d-tofunsucrysanthemate (hereinafter referred to as ectrin)
(Hereinafter referred to as bioallethrin) ON - (3,4,5,6-titrahydrophthalimide)
-Methyl di-cis/tranucrysanthemate (
Generic name: Phthalethrin: Trade name: Neopinamine or Detramenulin: Manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as neopinamine. Lithronforte: Manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as Chrythroneforte)
03-phenoxybenzyl 2,2-dimethyl-3-(
2,'2'-dichloro)vinylcyclo790pancarboxyclate (generic name: Pellemethrin; trade name: Exmin; manufactured by Sumitomo Chemical Hata Co., Ltd., hereinafter referred to as Exmin) 03-phenoxybenzyl d-cis/trans-crisante Mart (generic name: Fetuthrin; trade name: Sumithrin; manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as Sumithrin) Oa-cyano-37-funinoxybendi/I/&-isopropyl-I-re-4-chlorophenylacetate (common name: Fuenvalerate: trade name: Sumicidine) : manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as Sumicidin) oO,O-Siq-w 0-(22-dichloro)vinyl phosphate (hereinafter referred to as DDVP) 00.0-dimethy/I/ 0-(3-methyl- 4-Nitropheni A/)thionophosphate (hereinafter referred to as sumithion) 00.0-dixthirvo-2-isopropyl-4-methyl-pyrimidi~-(6)-thiophonuphat (hereinafter referred to as diazinon) 00.0- Dimethyl S-(L2-dicarpoethoxyethyl)-dithiophosphate (hereinafter referred to as Marathon) OO-isopropoxyphenyl Methyl carbamate (
In the present invention, the transpiration medium to be used in combination with the fumigation agent and various additives added as necessary is a variety of ordinary organic foams that are thermally decomposed to mainly generate nitrogen gas, carbon dioxide gas, etc. Any agent can be used, but preferably 3
It is preferable to have a foaming temperature of 0.00 or less. Typical organic blowing agents include azo compounds, nitroso compounds, hydrazide compounds, semicarbazide compounds, etc., and these can be used singly or in combination of two or more.

Specific compounds are shown in Table 1 below, along with their foaming temperatures and gas generation amounts (volume under standard conditions, CC/9).

Table l In the present invention, the mixing ratio of the above-mentioned transpiration medium to the fumigation agent can be selected as appropriate depending on the desired efficacy of the resulting composition, but usually the transpiration medium to the fumigation agent is about %M times or more. It is better to

As the mixing ratio of the evaporation medium increases, the effective volatilization rate of the fumigation agent gradually improves, but if the amount is too large, the effect will not improve. Usually, the amount of the transpiration medium is about 34 to 30 times the weight of the fumigation agent, preferably about 1 to 20 times the weight of the fumigation agent. In the present invention, the airborne concentration of the active ingredient in the fumigation agent in the space that requires treatment is 1/Jl$F ~ 200#ly
/g/m, preferably in the range of 5gIg to 50Mg/m. If the concentration is lower than this, it will not be possible to simultaneously control adults and pupa larvae in the treatment space, as well as larvae such as the sludge fly that lives in the water. This is undesirable because it causes problems of mortality and fish toxicity in the effluent water.

In the present invention, it is necessary to leave the fumigation agent for at least 30 minutes after evaporation.
Even if the time is shorter than this, the effects of the present invention cannot be achieved.

Further, the mixed form of the fumigation agent and the evaporation medium is not particularly limited, and may be a mixed powder, but in consideration of workability and ease of manufacturing and use of the resulting composition, appropriate granular or tablet forms may be used. It is preferable to form it into a shape, a lump, a pellet, a rod, a plate, a paste, etc., or to mix and seal it in a heat-melting resin bag. Solvents etc. can be used.

Examples are given below to explain the present invention in detail.

Production Examples 1 to 17 Using the double cylindrical container shown in Fig. 1, the inner container (
2) The insecticide and foaming agent listed in Table 1 are stored in the outer container (1), and 100 g of calcium oxide (particle size 1 to 5 mesh) is placed in the outer container (1), and smoke evaporation is carried out to carry out the present invention. obtained the drug. Water 409 is injected from the opening (4) leading into the outer container (1) of the obtained fumigation agent.

Example Using the fume transpiration agent of Production Example A2 shown in Table 1, an underground water tank (planar area 27.86
However, the depth is 35 m and the volume is 97.5 m (space volume is 864 m).
Open the manhole cover inside the water 11Ll door), prepare a water container filled with 4Qcc of water, and connect a bond (length 50α) attached in advance to the periphery of the container opening to drain the groundwater through the manhole opening. Tie it to a part of the manhole so that it can be suspended inside the tank, then crush the fume transpiration agent in the water container and place it in the underground water tank with the tie.
Close the manhole cover.

In the above fume transpiration agent, the evaporation medium was thermally decomposed by the heat generated by the hydration exothermic agent, and this thermal decomposition gas was generated.

Table 1 Target Insects, Chikaye, Butterflies (1st to 4th instar larvae, dancers, adults) Method for determining control effectiveness Before and after treatment, water was collected using a small 250-meter water tank at a designated power point in the underground water tank and collected into plastic bottles. After filling 9 bags, they were taken back to the laboratory and the larvae and complements living there were counted. In addition, the number of adult insects resting on some walls of the underground tank (2 out of 7 out of 1) was visually counted before and after the treatment.

Table 2 Control effect on adult mosquito mosquito 1 56 (t) 58 (EN OG > 0 (c) Q
(e2) 0(,G)2 33(ri)43(″)0(
ri 0(ri 0(ri 0) 38(ri) 24(=)
O'L-) 0 (Re OG) 0 4 37 (Z)
38(=) 0(~) 0(=) 0(ri 0(・)5
42(ri) 65(ri 0(・n O(・/)0(+
)0(su618(ri)15(・-) 0(1) 0(ri o(,) o(”17 8(ri l 7(=,) 0
('=n 0(ri U(J 0CQtotal 203
(Re 260(y) 0<l) QC Re 0 (Re OC
'-) Table & Control effect on Culex mosquito larvae and ants 1
38 (G) 30 (eup) O (side) 0 (ε) 0 (ta
) 0(ax)2 21Hf) 25(months) O(・n 0(?n) 0(=) 0(su3 54(・) 'H9
) 0(phosphorus 0(ke) 0(middle) 0(su4 22(
ri l(ri) 0(÷)0(ri) 0(f) 0(6)5
47 (phosphorus 93 (ri) 0 (ka) 0 (t) 0 (
ri O(su6 54(・) 80(ri) 0(1) 0
(Li 0 (Li oc'-)7 30(t), 48(=)
0(t) O(〃n 0(・) 0(su8 126(
ri) +33(1) 0(10(-) 0(-n 0(
total 582(+) 417(-) QC re
o(+) o(t) o(=)AVe 7211(-)
521 (-) 0 (J O As shown in Table 3, 100% lethal activity was observed one day after treatment.

The effect on butterfly flies was similarly determined and 100% lethal activity was observed 1 day after co-treatment of adults, pupae, and larvae.

[Brief explanation of the drawings] Fig. 1 is a vertical cross-sectional view of the smoke transpiration agent used in the present invention;
Figure (8) is a cross-sectional view of the underground water tank in which the present invention was implemented,
FIG. 3) is a vertical cross-sectional view of an underground water tank in which the present invention is implemented. In Fig.
February is the inner container, (3) is the transpirable insecticidal component, (4) is the pyrogenic substance, (May is the opening, (6) is the water volume gg, (7) is the locking part, and (8) is the hanging part. In the lower part, ■ ~ is the wall surface for adult population survey, ■ ~ ■ is the wall surface for larval and sect population survey, A is the chemical application point, B is the wall surface, and C is water.

Claims (1)

[Claims] ■ To simultaneously control adult insects, pupae, and larvae of pests that live on the walls m1 of underground water tanks and septic tanks, underwater, and at the water's edge, apply fumigation agents to the above-mentioned limited spaces.
#t. A method of using a fumigation agent characterized by causing acne to appear for at least 30 minutes.