I am so furious! I put this poisonous stuff on my 5 year old cat this morning and within half an hour I started noticing strange behavior but had no idea that it may have been the drops I had put on her. She keep twitching as if she was being squirted with water, kept moving from one spot to another as if finding a comfortable spot. I kept an eye on her and when I noticed her constant twitching like muscle spasms, runny diarrhea and clumps of fur falling, and uncontrollable pee’ing that I quickly got on the internet to see if these were side effects of the drops. The vet is closed being it’s New Years Eve. It wasn’t until I read all the horror stories that I quickly bathed her in Dawn Liquid Soap as suggested on some sites. I don’t know what else to do. I’m hoping in bathing her I was able to wash off all the drops but internally she will still need to get better. Although she is now eating you can tell that she is still not feeling well. Shame on Hartz for putting out this toxic product as if it’s safe for our loved cats/kittens. Disgusting company and I have now left several reviews on several sites detailing my disgust and warning people not to buy this crap.