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Bayer makes two different flea control products that can easily be confused with one another, leading to potentially lethal complications in our feline family members. Advantage has formulations approved for both dogs and cats, while the product Advantix is intended for use in dogs only. Advantix causes permethrin toxicity in cats, which is a common emergency I see, especially during the spring and summer months, when fleas are at their peak of peskiness.
What exactly is the difference?
Advantix is also a topical solution for the treatment and prevention of fleas, ticks, biting flies, mosquitoes and lice on dogs. The product’s active ingredients are imidacloprid and permethrin. It is the addition of permethrin to the recipe that makes the deadly difference.
Dogs can metabolize permethrin effectively, resulting in a safe product for them. However, cats cannot metabolize this ingredient, and will suffer from toxic effects if exposed. Cats are exposed to Advantix in a variety of ways, including direct application, close contact with a dog who has been treated within 48 hours, or if they have groomed a doggy pal’s fur after an application.
What are the symptoms?
What is the treatment?
Prognosis for recovery is excellent with early treatment.
If you do use canine Advantix in a home with cats, apply the medicine to your dog while your cat does not have access to the area or to the dog and allow for the medicine to fully absorb into your dog’s skin—when you can no longer visibly see the oily medication on the fur—before allowing your cat back into the same room. I have treated cats that were obsessive groomers and decided the fur between “their” dog’s shoulder blades needed to be cleaned.
And lastly, always double-check labels and read all the fine print; you can even have someone just “double-check you” as another safety precaution.