Frontline® Spray works on contact, killing 95% of fleas within two hours and 98-100% in 24 hours. Frontline's active ingredient, Fipronil, is distributed in the natural oils of your pet's coat for long-lasting effectiveness.
Kills up to 100% of existing fleas in less than 24 hours
Continues killing fleas for an entire month or more
Remains waterproof for 30 days, even if your dog or cat swims or is bathed
Gentle enough for use on puppies and kittens 8 weeks of age or older
Frontline Flea & Tick All Ages Dog & Cat Spray, 250ml