| abstract |
An insecticidal composition containing 2,3,5,6-tetrafluorobenzyln(+)-1R, trans-2,2-dimethyl-3-(2,2-dichlorovinyl)cyclopropanecarboxylatenas insecticidally activeningredient, and at least one monovalent or divalent fattynacid ester having a total number of carbon atoms of 18 to 26nexhibits a stable insecticidal effect for a long period ofntime particularly when applied for heating fumigation. |