Provided is a pest control composition that contains as active ingredients at least one type of pest control agent selected from the group (a) consisting of an iminopyridine derivative represented by general formula (1) and an acid addition salt thereof and at least one type of pest control agent selected from the group (b) consisting of pest control agents other than those in group (a). Chemical formula 1 In formula (1): Ar represents a halogen atom a C1-C4 alkyl group that may be optionally substituted by a halogen atom an alkyloxy group that may be optionally substituted by a halogen atom or a pyridyl group or pyrimidyl group that may be optionally substituted by a hydroxyl group cyano group or nitro group R1 represents a hydrogen atom or a C1-C6 alkyl group Y represents a hydrogen atom a halogen atom a hydroxyl group a C1-C6 alkyl group that may be optionally substituted by a halogen atom a C1-C6 alkyloxy group that may be optionally substituted by a halogen atom a cyano group a formyl group or a nitro group and R2 represents a C1-C6 alkyl group that is substituted by a halogen atom.
