Kills adult fleas, flea eggs, flea larvae, and ticks. Frontline's ability to kill the flea larvae and flea eggs helps break the flea life cycle. Frontline Plus is one of the most complete flea treatment products on the market. One application and fleas will be gone in 24 HOURS! Frontline Plus flea treatment continues to kill fleas for a whole month. Keep applying this flea treatment to your cat or dog on a monthly basis and be rid of fleas forever! Do not apply more than once a month. Frontline Flea Control products are waterproof, so swimming or bathing is fine and won't rub the treatment off. Application is fast and easy. Open an applicator, spread your cat or dog's hair between the shoulder blades, apply Frontline Plus Spot On Treatment and you're done! Frontline flea treatment can be used on dogs and cats as young as 8 weeks old. Do not use on other animals. Consult your veterinarian before using. Find out more info at Frontline FAQ page. Frontline Plus offers treatment and prevention of the brown dog tick, the American dog tick, the lone star tick, and deer ticks (carrier's of Lyme disease). Frontline Plus flea treatment kills 100% of fleas within 24 hours of application. One application last for an entire month or more. Frontline Flea Control products are waterproof, so swimming or bathing is fine and won't rub the treatment off. It is gentle enough to use on puppies and kittens 8 weeks or older. Find out more about Frontline Plus Flea Control at the Frontline FAQ page.