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Advantage Flea Treatment: Buy 12 Doses, Get 4 Free

The original imidacloprid Advantage for dogs and cats, in 4, 8 and 16-dose packs

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Started
Aug 27, 2026
Valid in
United States
Last checked
Oct 27, 2026
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This is the original Advantage spot-on flea treatment, the version that contains imidacloprid alone. In US stores you'll mostly find Advantage II, which replaced it in 2011 and adds pyriproxyfen to kill flea eggs and larvae as well. Original Advantage kills adult fleas on contact, usually within 20 minutes and before they have to bite. It also kills larvae in the areas your pet spends time in. It stays effective after bathing or swimming, and it's labeled safe for puppies, kittens, and pregnant or nursing pets. PetCareClub sells it in color-coded packs by weight: four sizes for dogs (up to 10 lbs, 11 to 20, 21 to 55, and over 55) and two for cats. Each size comes in a 4-dose pack, a 6 + 2 free pack or a 12 + 4 free pack. The 16-dose pack works out to roughly $5.75 to $6.60 per dose for dogs, compared with about $8.40 to $10 per dose in the 4-pack. It ships from the UK, so allow 10 to 15 business days, and order before your current supply runs out.

Fine print

Prices are per pack, and the free doses come in the larger pack sizes (6 + 2 free, 12 + 4 free). No code is needed. Orders ship from the UK within 2 business days and take 10 to 15 business days to reach the US. US shipping is free over $49; below that it's $9.95. Unopened returns are accepted if you contact PetCareClub support within 5 days of delivery.

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Original Advantage, which contains imidacloprid only. Advantage II, the version sold in US stores since 2011, adds pyriproxyfen to also kill flea eggs and larvae.
Go by your pet's weight. Dog packs come in four sizes: up to 10 lbs, 11 to 20 lbs, 21 to 55 lbs, and over 55 lbs. Cat packs come in two: kittens and small cats, and cats over 9 lbs.
No. Advantage treats fleas, plus lice on dogs. For ticks, look at K9 Advantix or a Seresto collar, which PetCareClub also sells.
Orders ship from the UK within 2 business days and take 10 to 15 business days to reach the US.
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