I have used k9 Advantix on Chica and have had problems with it. I know now that Chica gets a very bad irritation from the stuff. It is suppose to go through the blood stream through the animals skin to protect them from fleas etc. The chemical in this stuff is too irritating to Chicas skin and makes her itch her ears so bad, she scrathes until the back of her ears are red and bald.K9Advantix has different chemicals than Frontline. I haven't used frontline yet untill I talk to my vet. Does anyone have bad results like this with their dogs or cats?
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