Activyl for Cats Fleas are the most common external parasite found on pets, and can irritate your pet with constant itching and scratching, hair loss, or flea allergy dermatitis. Activyl for Cats is an innovative spot-on flea treatment that is highly effective at killing fleas and preventing infestation. It doesn't just kill adult fleas, it stops flea eggs and larvae from developing, breaking the flea life cycle and keeping your home and your pets safe. Activyl uses indoxacarb and a mode of action that uses enzymes inside the flea to activate serious flea killing power. It is applied to a small area of skin, but soon spreads on the skin and coat. Fleas don't have to bite to take up Activyl, simply coming into contact with the skin is enough. Features: For cats 8 weeks and older weighing over 9 lb. Fast-acting, wipes out 90% of fleas within 12 hours Long-lasting, killing 100% of newly arriving fleas for four weeks Kills fleas, larvae and eggs to break the life cycle Water-resistant Item Specifications: Dose: 3-pack Active Ingredient: Indoxacarb 19.53% 13842626 8713184153142