Fast-acting Itch Flea treatment is vet approved and scientifically proven to protect your pet and your home. The double action spot-on treatment kills adult fleas within 24 hours, halts all other flea life stages in their tracks and stops any new fleas joining the party. Plus it kills ticks and lice. Most flea treatments only kill the fleas, but our double action formula also attacks eggs and larvae too, breaking the flea life cycle and preventing any infestation on your pet and in your home. Because, seriously, who wants that? Fipronil kills live adult fleas, lice and ticks on contact. S-methoprene works by penetrating the shell of newly laid eggs or by being absorbed through the immature flea's body surface to prevent their growth and further development into adults, thereby limiting an ongoing infestation. (Sorry fleas!).  Part the hair on the back of your pet's neck, snap the top of the pipette, and apply the entire pipette liquid to the exposed skin, then reward for good behaviour. It's as simple as that! Suitable for adult dogs and puppies 8 weeks or older.