Earth's Answers offers all natural flea control powder for dogs, puppies, cats and kittens. Our flea treatment powder is made with diatomaceous earth and a proprietary blend of powdered herbs. Our powder kills fleas by physical action, via dehydration, making there no chance for resistance. Earth's Answers No More Flea powder is 100% safe and non toxic to pregnant dogs and cats. It can be used on lactating dogs and cats and puppies and kittens at any age.