An agent for controlling noxious arthropods has an exceptional noxious arthropod controlling effect, said agent containing an amide compound represented by Formula (I) and an inactive carrier. In formula (I), R2 represents a C1-C3 chain hydrocarbon group, etc., R5 and R6 represent a hydrogen atom, etc., R9 represents a C1-C4 alkyl group, etc., R10 represents a C1-C4 alkyl group or hydrogen atom, etc., R11 and R12 each independently represent a C1-C4 alkyl group, etc., and Y represents a single bond, an oxygen atom, or S(O)u； when Y is a single bond, m represents 0, and Q represents a C1-C8 chain hydrocarbon group, etc.； and when Y is an oxygen atom or S(O)u, m represents any integer of 0 to 7, Q represents a C1-C8 chain hydrocarbon group, etc., a and b represent 0, 1, 2, or 3 (the sum of a and b representing any integer of 1 to 6), and u represents 0, 1, or 2.
