Disclosed is a composition comprising at least one amine derivative selected from N-[1-((6-chloropyridin-3-yl)methyl)pyridin-2(1H)-ylidene]-2,2,2-trifluoroacetamide or salt thereof, and a carrier suitable for use in pest control which exhibits a melting point of 155 to 158°C in differential scanning calorimetry (DSC) and diffraction angle peaks at least at the following diffraction angles (2&thetas) in powder x-ray diffraction analysis 8.6 ± 0.2°, 14.2 ± 0.2°, 17.5 ± 0.2°, 18.3 ± 0.2°, 19.7 ± 0.2°, 22.3 ± 0.2°, 30.9 ± 0.2°, 35.3 ± 0.2°. It is found that the amine derivative compound has activity for use as a control agent of agricultural and horticultural pests.
