I too was a victim to using a Hartz product. I usually used frontline but was in Wal-mart and thougt I would just pick something up here for this time. Almost immediately my dog Lexie was not acting quite right. She was jumpy and acting like something was biting her. I ignored this and went away for a few hours to come home to her foaming at her mouth. I was very upset and immediately put her in the bath. She didn’t want to eat either. Went to bed but she could not settle down. Got up with her at 2:oo in the morning to search for this product only to find all of these horrible stories. I was so upset! I called the emergency vet and they said to watch for seizures and vomitting. I read some more stories and took their advise and bathed her again in a antibacterial dish soap and also baking soda. She seems to be a little better right now. I will be staying up with her tonight to watch her. Something has to be done about this. I could hardly stand to read some of these stragec stories. I would like to be part of getting these out of the market once and for all!!!!