Deadly against ants, fleas, aphids, bollworms, cockroaches, earwigs, leafhoppers, mites, slugs, snails, Japanese beetle grubs and more, DE (diatomaceous earth) Insect Dust is a fast-acting combatant against almost any insect infestation. DE Insect Dust is composed of pulverized shells of microscopic fresh and saltwater algae called diatoms. This dust penetrates hard and soft shell insects, ultimately resulting in their complete deterioration. It is completely non-toxic to people, pets, and other animals. It comes in a 4.4-pound bag.