Bio Groom Flea and Tick Spray (16 oz) is fast acting and ideal for older pets and pets with sensitive skin. With a fresh, herbal scent, this water-based, extra-strength formula contains natural Pyrethrins that rapidly kill fleas, ticks, and lice on pets and in their sleeping quarters. Safe for puppies and kittens four weeks or older. Effectively repels flying insects. Fortified with Lanolin conditioners. Safe with Proban. May be used as often as necessary.