Herbal Flea Powder, 4 oz is made with all-natural ingredients, so it is safe to use on dogs and cats six weeks of age and older and all types of pet bedding, furniture, cat condos, blankets, and pillows. The rosemary, lemongrass oil, and eucalyptus oil in NaturVet's Herbal Flea Powder repel fleas while leaving pet bedding smelling fresh.