Bio Spot Flea & Tick Mist for Cats kills and repels fleas, ticks, lice, flies, mosquitoes and gnats safely. Containing Nylar, an insect growth regulator (IGR), which kills pre-adult fleas, flea eggs and larvae for 3 months. Safe for use on cats (over 7 months of age) and their surroundings including cat bedding, furniture and carpeting. An ideal complement to Bio Spot Stripe-On Flea Control for Cats. Avoid contact with the animals eyes, mouth, nose and genitalia. Repeat treatment every 3 months.