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K9 Advantix II is a monthly topical flea and tick treatment for dogs weighing 21 to 55 lbs. It kills fleas within 12 hours and repels ticks, mosquitoes, biting flies and lice on contact, so parasites do not need to bite to die. It is fragrance-free, waterproof after 24 hours and needs no prescription. Unlike flea-only spot-ons, it covers ticks and mosquitoes too, but it contains permethrin, so it must never be used on cats.
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Owners report it clears heavy flea infestations fast and holds up through swimming and baths. Many say it is the only spot-on that kept ticks and mosquitoes off their dogs. A minority report skin irritation at the application spot or fleas returning late in the month.
K9 Advantix II is a topical flea and tick treatment for dogs weighing 21 to 55 lbs. Each application protects for 30 days. It treats and prevents infestations of fleas, ticks, mosquitoes, biting flies and lice.
The formula kills and repels on contact, so fleas don't have to bite a dog to die. It kills fleas within 12 hours of application. No prescription is needed.
