It is to provide a method which does not have problem with safety and enables controlling various pests even at a low dosage, and a pest control agent composition and a pest control agent set which are suitable to be used for the method. At least one selected from a compound of formula (I) (wherein, R.sup.1 represents a hydrogen atom, a substituted or unsubstituted C1-6 alkyl group, etc., R.sup.2 represents a hydrogen atom or a C1-6 alkyl group, R.sup.1 and R.sup.2 optionally form a C2-6 alkylene group together, R.sup.3 and R.sup.4 each independently represent a hydrogen atom or a C1-6 alkyl group, R.sup.5 represents a substituted or unsubstituted C1-6 alkyl group or a substituted or unsubstituted C2-6 alkynyl group, Y represents a C1-6 haloalkyl group, X represents a halogeno group, a C1-6 alkyl group, or the like) and a salt thereof is used with an insecticidal or acaricidal active component. ##STR00001##