Made of diatomaceous earth. Ant, flea, silverfish, cockroaches, bed bugs, carpet beetles, slugs, tomato hornworm, earwig and tick control. All natural product that is so safe it may be rubbed right into your dog or cat's fur. Intended for application with a hand duster. Insects that come in contact with this powder die of dehydration with 48 hours. 4.4 lb bag treats 2,500 sq. ft.