The present invention solves the problem of it not being possible to obtain a pest control composition in the form of an aqueous suspension containing (a) flonicamid and (b) buprofezin as active components that is stable when said composition is stored for a long period of time as a result of particles of the active components growing and becoming coarse during storage. Provided is a pest control composition in the form of an aqueous suspension that comprises: (a) flonicamid (b) buprofezin (c) a polycarboxylate (d) at least one sulfonic acid surfactant selected from the group consisting of salts of alkyl sulfosuccinic acid, salts of lignin sulfonic acid, salts of C8-18 alkyl benzene sulfonic acid, and salts of C8-18 alkyl diphenyl ether sulfonic acid (e) a formalin condensate of sodium alkyl naphthalene sulfonate and water.
