There is provided an organic sulfur compound having an excellent controllingeffect on harmful arthropods which is represented by formula (I): wherein Rrepresents a C3-C6 haloalkyl group having at least one fluorine atom and at leastone atom selected from group consisting of a chlorine atom, a bromine atom andan iodine atom, R represents a cyano group and the like, Rrepresents a hydrogen atom, a halogen atom or a C1-C4 alkyl group, Rrepresents a C1-C5 fluoroalkyl group, and n represents 0, 1 or 2.
