Works on roaches, silverfish, fleas, ants and any other insects. Lasts over a year. Just sprinkle on carpet and sweep into carpet fibers until it disappears. Bugs that ingest it become dehydrated and die. As the flea eggs hatch they will ingest it and die also. One pound covers 500 sq. ft.
Allow up to six weeks for total flea control. Do not put on pets, around children, food, food preparation areas or on ornamental plants.