Bio-Groom Flea and Tick-14 residual spray is safe for puppies and kittens 3 months and older. This formula is water-based with Lanolin and provides control of fleas, ticks and lice for up to two weeks. Safe for even the most sensitive skin. Our unique micro-emulsion combines natural Pyrethrins for fast knockdown and Permethrin, a man-made Pyrethrin, for extra long lasting residual action. With a baby powder fragrance, this formula is gentle and biodegradable. Available in 8-ounce.