I posted this on Facebook this morning, but want to get this experience to as wide an audience as possible, so that perhaps a similar situation, or worse, may be avoided by others:
Please be careful if you are thinking of or are using K9 Advantix on your dogs to repel fleas. It had been used on Bailey once before and I applied it day before yesterday, but this time he developed an odd reaction to it, including panting, stomach upset, extreme restlessness, whimpering and nervousness. It was too late to wash it off, as the reaction started more than 24 hours after applying it. I have had almost no sleep, as Bailey bounced off the walls all night, running around the room, jumping at my face, pouncing on my head, trying to lick all over my face and neck whenever I was about to drop off to sleep. I looked up reactions to the K9 Advantix, and sure enough, there have been many such reactions, though many dogs also seem to use this flea treatment safely. It was fortunate he did not have a seizure, or worse, as happens to some dogs. He never had a problem with Advantage or Frontline, but I am loathe to use any of these types of products on him again; I’ll be looking at natural products and other techniques to control fleas. The reaction seems to have worn off this morning, and we are both exhausted. Never again.