It kills insects and prevents for reinfestation during 4 weeks for fleas, 2 weeks for ticks and 4 weeks for lice (doubled if your animal is smaller).
Frontline Combo Spot-On Cats and Ferrets is especially formulated for cats and ferrets.
Discover the brand Frontline
Frontline products have been developed to kill fleas and ticks on animals by contact of the parasite with the medicine deposed on the skin.
Products that don't go in blood, but that are concentrated in the sebum and are then stored in the sebaceous glands.
Frontline also contains one insect growth regulator. This one avoids the infestation by eggs eventually produced before the death of the flea.