This powder is safe for all! You may use it on your cats as well as dogs and even your horses for ticks! It is made from 100% natural apothecary ingredients; it repels as well as kills hard shell pests! Shake it on your pet as well as their bedding & yours. Leave it on the beddings and furniture for up to 10 days, apply daily to your pet until the pests have left. It will even get rid of bed bugs!