21123456A tetrazolinone compound represented by formula (1) [wherein Q represents a bivalent 5 membered aromatic heterocyclic group which may have at least one atom or group selected from the group P A represents a 5 to 10 membered monocyclic or condensed cyclic heterocyclic group which may have at least one atom or group selected from the group P R and R independently represent a hydrogen atom or the like R represents a C1 C6 alkyl group which may have at least one halogen atom or the like R R and R independently represent a hydrogen atom or the like and X represents an oxygen atom or a sulfur atom] has an excellent controlling effect on harmful organisms.
