NaturVet’s Herbal Flea Powder can used directly on cats and kittens over the age of six weeks, or can be used on any type of pet bedding such as pillows, foam beds and blankets. The unique natural combination of Rosemary and Cedar Oil repels fleas and ticks while deodorizing. Herbal flea powder will leave your pet, or your pet's bed, with a fresh and pleasant fragrance. Will not interfere with other spot-on products such as Advantage.