One of the leading brands of flea treatments for dogs is K9 Advantix, which also works to repel ticks. However, K9 Advantix contains an ingredient guide
that makes it unsuitable for flea treatment on cats. If you are a cat owner, there are still a variety of flea treatments available. Among them are Seresto®
and Advantage II®
, both of which are flea preventives available in formulations for cats or dogs. For more information on flea preventives, you can look at this buyer’s guide
Using a flea treatment instead of a flea preventive is still an option for risk takers, but we can only see what kind of risk they’re taking if we compare the efficacy of flea repellents to a case in which no flea repellant is used. Although it depends on the ingredients of your preventive product; studies have shown that flea medication with a particular amount of imidacloprid, one of the active ingredients in K9 Advantix®
, is 98.43% effective over the 30-day period for which many topical flea preventives are labeled. Though the study used the original formula for K9 Advantix® rather than the new and improved formula for K9 Advantix® II, the new formula still uses similar concentrations of both imidicloprid and permethrin. 2
Do not use K9 Advantix® II on cats.
K9 Advantix, Advantage and Seresto are registered trademarks of Bayer.
1Grace SF. Fleas. In: Norsworthy GD, Crystal MA, Grace SF, et al, eds. (2006). The Feline Patient. 3rd ed. Ames, IA: Blackwell Publishing; 106-107.
2Science Direct, Efficacy of a combination of imidacloprid 10%/permethrin 50% versus fipronil 10%/(s)-methoprene 12%, against ticks in naturally infected dogs