Harris Products Group Diatomaceous Earth Food Grade Natural, 4 lbs is a natural product. OMRI listed with the organic minerals and meets organic use standards- no fillers or additives. Composed of 100% ground freshwater diatomaceous earth in a ready to use powder. Made of the naturally occurring fossilized remains of diatoms, a type of algae that forms in freshwater. Harris Products Group Earth Food Grade is chemical free and completely safe to use around children and pets. Food Grade quality allows the product to be mixed in animal feed for horses, chickens, dogs, cats cattle and many other animals. Versatile uses for both indoors and outdoor -protect your garden plants control crawling insects or indoors in cracks and crevices that insects will come in contact, and many more uses.