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FRONTLINE Plus is a monthly topical flea and tick treatment for dogs 45 to 88 lbs. It combines fipronil to kill adult fleas and ticks with (S)-methoprene, which stops flea eggs and larvae from developing, so it breaks the flea life cycle rather than just killing what is on the dog. It is waterproof and stays effective for a full 30 days per dose. It is the long-standing default topical, and owners value that track record; newer oral chews act faster on fleas and are not washed off, but many dogs tolerate this topical well and it also covers chewing lice.
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With over 47,000 ratings averaging 4.4 out of 5, most owners report it keeps their dogs flea-free and call it reliable and easy to apply. Complaints center on application-site irritation, a greasy spot, and slower flea kill than oral products.
FRONTLINE Plus for Dogs is a waterproof topical flea and tick treatment for large dogs weighing 45 to 88 lbs. It kills fleas, flea eggs, flea larvae, chewing lice and ticks, including ticks that can transmit Lyme disease.
The formula contains fipronil and (S)-methoprene. It kills existing adult fleas, flea eggs and flea larvae, which breaks the flea life cycle and helps guard against further infestations.
Apply one dose monthly. Each dose protects against fleas and ticks for 30 days. It can be used on puppies as young as eight weeks old that weigh 5 pounds or more. Treating all dogs or cats in a household each month helps control fleas and ticks and prevents new flea infestations.
