A pesticidal composition containing : 4-methoxyinethyl-2, 3, 5, 6-tetrafluorobenzyl 3- (2-cyano-1-propenyl ) -2, 2-dimethylcyclopropanecarboxylate, a saturated hydrocarbon having an initial boiling point of 150℃ or higher and a 95%-distillation temperature of 300℃ or lower, and at least one alkyl carboxylate ester selected from the group consisting of the following esters (i) to (iii) : (i) alkyl alkylcarboxylate esters having 12 to 20 carbon atoms, (ii) dialkyl dicarboxylate esters having 12 to 20 carbon atoms, and (iii) trialkyl acetylcitrate esters having 12 to 20 carbon atoms has an excellent pesticidal activity.本發明係關於含有:3-(2-氰基-1-丙烯基)-2,2-二甲基環丙烷羧酸4-甲氧基甲基-2,3,5,6-四氟苯甲酯、具有150℃或更高的初沸點及300℃或更低的95%蒸餾溫度的飽和烴、以及至少一種選自下列(i)至(iii)酯類所組成之群組的羧酸烷基酯之殺蟲性組成物:(i)具有12至20個碳原子之烷基羧酸烷基酯類、(ii)具有12至20個碳原子之二羧酸二烷基酯類、以及(iii)具有12至20個碳原子之乙醯基檸檬酸三烷基酯類;其具有優良的殺蟲性活性。
