A harmful arthropod control composition comprising flonicamid, one or more insect growth regulator compounds selected from Group (A), and one or more sheath blight disease control compounds selected from Group (B):Group (A): a group consisting of methoxyfenozide, tebufenozide, and chromafenozideGroup (B): a group consisting of flutolanil, pencycuron, N-[2-(1,3-dimethylbutyl)phenyl]-5-fluoro-1,3-dimethyl-1H-pyrazole-4-carboxamide, furametpyr and validamycin A, and having an excellent control effect on harmful arthropods.
