Catego(R) from Ceva Animal Health Flea & Tick Spot-On Catego is a powerful flea and tick control solution made specifically for cats. It is an effective monthly prevention and treatment of fleas, ticks, and chewing lice for cats and kittens (weighing over 1.5 lb. and over 8 weeks of age). It starts killing fleas within 6 hours of application. Catego kills ticks through contact so they do not have to bite your cat in order to die. Catego is the only product with the unique combination of the proven active ingredients Dinotefuran, Fipronil, and Pyriproxyfen. Features: Manufacturer Satisfaction Guarantee Kills adult fleas, flea eggs, larvae, ticks, and chewing lice Single dose effectively stops flea infestation and prevents re-infestation for one month For both indoor and outdoor cats and kittens Convenient and easy to apply with patented applicator Quick drying, non-greasy Item Specifications: Net Contents: 0.102 fl oz. (6 doses, each dose 0.017 fl oz.) Active Ingredients: Dinotefuran: 22.00% Fipronil: 8.92% Pyriproxyfen: 3.00% Other Ingredients: 66.08% Total: 100.00% *Note: Do not use this product on debilitated, aged, medicated, pregnant or nursing animals or animals known to be sensitive to pesticide products without first consulting a veterinarian.