Quick, effective way to kill adult fleas and ticks on your dog or cat. Because this fast-acting spray keeps working for 30 days, it helps prevent reinfestations, too. Frontline Spray contains fipronil, which works by affecting the flea's or tick's nervous system, causing paralysis and death. Frontline Spray also kills chewing lice and aids in control of sarcoptic mange infestations in dogs. For flea and tick infestations, we recommend you apply fast-acting Frontline Spray to your pet right away and then follow-up in 30 days with a product that kills adult and juvenile fleas, such as Frontline® Plus. For dogs, puppies, cats, and kittens 8 weeks of age and older.
Allow at least 30 days between using spray and applying topical.
Please click on "More Information" for directions and ingredients.
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