Yesterday we gave our cat Hartz flea and tick collar… (Having no idea this site existed). She was acting weird after we put it on her, running around the house scared then went to one of her hiding spots. Didn’t think anything of it until this morning when she peed in my bed. She has NEVER done that before, so I started looking up side effects and found this site. I immediately cut her collar off. Haven’t seen a change yet, going to give her time to calm down. I am in shock after reading all these posts…how are they still in the stores.