This is Fresh water Food Grade Diatomaceous Earth. It has nothing added to it, leaving it just as nature has intended it to be, pure Diatomaceous Earth. Diatomaceous Earth is a naturally occurring powder that is great for pet owners. It’s the perfect alternative to using harmful and expensive chemicals for controlling fleas, ticks and mites – both on or around your pet. For fleas, ticks, and mites rub or brush DE into the fur of your dogs. For larger infestations, sprinkle DE on or around the bedding and any other areas in the home where your pets may spend time.