Sumitomo Chemical Company, Limited

Fumakilla Limited

Shiro Oyama

Yasuharu Takei

Shinobu Yamamoto

Satoshi Ohi

Kunihiro Okada

Ryo Yamamoto

Yoshihiro Hirobe

A heat fumigation apparatus for transpiring a solution of a chemical agent dissolved in a solvent by heating which comprises a container having the solution therein, a wick a part of which is immersed in the solution and a heater for heating the upper portion of the wick thereby transpiring the solution drawn up the wick. The wick is composed of an inorganic powder and/or an organic powder, a binding agent and at least one antioxidant which is substantially non-evaporative at a heating temperature.

Heat fumigation apparatus

An insecticidal composition for electric fumigator consisting essentially of:

Insecticidal article for electric fumigator

In a method for knock down of injurious insects or for freeing a particular environment therefrom by heating fumigation comprising dipping a part of a porous absorptive wick in an insecticidal solution to allow it to absorb the solution and indirectly heating said wick around the top to fumigate the absorbed insecticidal solution, a method for knock down of injurious insects or for freeing a particular environment therefrom, which comprises exposing the insects to the vapor, characterized in that a C.sub.12 -C.sub.18 aliphatic saturated hydrocarbon solution containing as an active ingredient 2-methyl-4-oxo-3-(2-propynyl)cyclopent-2-enyl chrysanthemate is used as said insecticidal solution, a porous absorptive wick prepared by caking a powdery inorganic substance with a binding agent is used as said porous absorptive wick, and besides that said absorptive wick is indirectly heated around the top to a temperature in a range of from 105.degree. to 130.degree. C.

Method for killing insects by heating fumigation

Growing community of inventors

Urawa, Japan

Shiro Oyama