The present invention provides a pest control composition containing a combination of (E)-1-(2-chloro-1,3-thiazol-5-ylmethyl)-3-methyl-2-nitroguanidine and an ester compound represented by formula (1) wherein X¹ and X² each independently represent halogen, a methyl group, a trifluoromethyl group or a hydrogen atom X³ represents a hydrogen atom, a methyl group, a propargyl group, a methoxy group or a methoxymethyl group.