Compared across 5 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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Advantix K9 II is a topical spot-on treatment for large dogs that kills fleas, ticks, lice and mosquitoes, and repels sandflies and stable flies. It is a vet-channel product built around imidacloprid and permethrin, so it acts on contact rather than requiring the parasite to bite. Owners choose it for broad parasite cover and fast knockdown; the trade-off is that permethrin is toxic to cats, so it is unsuitable in households with cats that groom or sleep with the dog. It is a treatment, not a preventive collar, and needs reapplying monthly.
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Lowest price we've seen: $57.42 on Nov 11 at Chewy. Tracked across 5 stores since Nov 11.
Owners of large dogs generally report fast flea knockdown and good tick control, and many value the repellent action against mosquitoes. Complaints centre on application-site irritation and on the product washing out with frequent swimming.
Advantix K9 II Liquid Dog Flea Drops is a liquid flea treatment for dogs. It is made for maxi-size dogs weighing 26 to 44 kg and is suitable for adult and senior dogs.
The product is listed in the dog skin care category.
