Frontline® is a monthly application that kills 100% of fleas and their larvae within 24 to 48 hours. In addition, Frontline® breaks the parasite life cycle, thus preventing them from laying eggs and reproducing. Frontline® is applied to the back of the neck on cats and between the shoulder blades on dogs. It spreads naturally on the skin surface at the hair root level, aided by body movement to provide whole body coverage. Frontline® a is water-resistant flea medication, so it continues to kill fleas even after a shampooing, swimming, rain or exposure to sunlight.
Frontline® is for Dogs and Cats over 10 weeks old. For Dogs over 132 pounds, use the appropriate combination.