s chitin synthesis inhibiting activity cuticle hardening activity or juvenile hormone like activity examples include the following general name and compound name after colon slow acting insecticides for use in the present invention are not particularly limited as long as they slowly exhibit insecticidal activity after the exposure to termites specific examples include inorganic slow acting insecticides such as arsenious acid sodium arsenite calcium arsenite lead arsenate fenbutatin oxide azocyclitin silicon dioxide sodium silicofluoride potassium silicofluoride sulfur sodium fluoride thallium sulfate boric acid sodium borate zinc chloride sodium thiosulfate sodium selenate sodium cyanide and potassium cyanide as well as the following organic slow acting insecticides general name and compound name after colon methods for exterminating termites for use in the present invention are not particularly limited as long as they use the entomopathogenic nematode together with an insect growth regulator or a slow acting insecticide hereafter simply referred to as a chemical agent examples of the embodiments include the following 1 a method comprising installing a chemical agent as a bait agent bait toxicant and subsequently spreading entomopathogenic nematodes around the chemical agent or around the places where water is used in the houses 2 a method comprising installing a bait station bait toxicant container containing a chemical agent and an entomopathogenic nematode 3 a.