Doktor Doom Total Release Great for eliminating wasp nests under steps & porches or to fumigate your average size room up to 10' x 10', greenhouses, attics, crawl spaces or wherever else you have a major infestation of insects Flushes out and eradicates insects pest on contact 150 gram "Total Release Fumigator". Great for larger rooms within the home, cabins, RV's, small airplanes, boats, larger attics, greenhouses, garages etc.Fumigate areas up to 15' x15'. 400 gram "Hi-Pressure Fumigator" ideal for use in areas with a heavy infestation of insects also for use in larger areas- will fumigate areas up to 25' x 25'. Fragrance free The biggest benefit to using the Total Release Fumigators is that they are made with natural pyrethrum which biologically breaks down in a couple of hours thus providing very fast re-entry times to fumigated areas. They really do not have a strong odor- which also provides the homeowner with a peace of mind as there are no long lasting obnoxious odors lingering in the air; if used in conjunction with Doktor Doom Residual Products will provide the Homeowner with a bug free environment. Use the fumigants first to flush out and eradicate the insects and then follow up with the Residuals to prevent further enter of pests into your home or gardening environment.