The use of flubendiamid and thiosultap or a salt thereof in combination can produce a significant synergistic control effect, even when each of the components is used in an amount in which a satisfactory control effect cannot be achieved when used singly. The use of these components in combination can produce a significant control effect against noxious organisms that cannot be controlled when each of the components is used singly and noxious organism that have resistance to commercially available control agents.