Product Description Ants and crawling insects can be unwelcome visitors to homes and gardens, but Nippon has the solution to controlling them as quickly as possible. Nippon Pest Smoke will quickly eradicate a wide range of insects, including bedbugs, fleas, cockroaches, weevils and flying insects. Nippon Pest Smoke is odourless and easy to use. For best results make the area to be fumigated as smoke-tight as possible by closing all windows etc. Light the wick and retire from the treated area. For severe infestations fumigate three times at 5 to 7 day intervals.