I gave both of my 2 year old cats Hartz UltraGuard topical on Tuesday and my female is fine but my male is in bad shape. Wednesday he was very lethargic and was not eating or drinking. Thursday I looked up reactions to this stuff and was horrified at what I saw. I gave him a bath and have been giving him water with a dropper but he has not used the bathroom and is getting worse. He has an appt today(Friday) at 10:30 and I just hope everything is ok but it’s not looking great. This is devastating to watch.