Disclosed is a method for controlling animal parasitic pests in a nonhuman subject or for controlling agricultural/horticultural pests, with an amine derivative or a salt thereof and at least one of a carrier and an adjuvant, wherein the amine derivative is N-[1-((6-chloropyridin-3-yl)methyl)pyridine-2(1H)-ylidne]-2,2,2-trifluoroacetamide.