A PESTICIDAL COMPOSITION CONTAINING: 4-METHOXYMETHYL-2,3,5,6-TETRAFLUOROBENZYL 3-(2-CYANO-1- PROPENYL) -2, 2-DIMETHYLCYCLOPROPANECARBOXYLATE, A SATURATED HYDROCARBON HAVING AN INITIAL BOILING POINT OF 150°C OR HIGHER AND A 95%-DISTILLATION TEMPERATURE OF 300°C OR LOWER, AND AT LEAST ONE ALKYL CARBOXYLATE ESTER SELECTED FROM THE GROUP CONSISTING OF THE FOLLOWING ESTERS (I) TO (III) A (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.