we got a 8 week old kitten from a family that never took care of him. he was full of fleas we went to petsmart witch is a store near where I live anyways we gave my kitten a Hartz ultra guard one Spot treatment for cats and kittens, we read the instructions really carefully and followed them we thought it was OK as the instructions said that it was recommendable for cats 8 weeks and older, anyways shortly after we started applied the product he started scratching like crazy. I thought it was because of the drops itself and wet fur that was making him scratch but i was a little worried about it. shortly there after he became really drowsy and started to sleep all day and when he did get up to walk it would be like he was drunk. He would sway and fall over, he couldn’t walk in a straight line and thats when i noticed that something was really wrong. He wouldn’t eat or drink anything and we tried everything. I tried washing his neck and where the product was applied. That did nothing and he seemed to be getting worse. We then took him to the 24 hour pet hospital. They said that it was poison. They did everything they could for him and said that we can take him home and they gave us this charcodote to give to him in the morning. The following morning we gave it to him. Even 12 hours later it doesn’t seem like he is getting any better but in fact worse. I can’t believe that i took him in to help him and take his fleas away and make him better but instead I’m killing him myself. He is to young to leave this place he hasn’t even had the chance to live his life. I feel like it is all my fault I brought him in to protect him but in the process I’m killing him with my love. This isn’t fair to him. I don’t want to let him go but I hate watching him suffer how he is and it is all because of me. He is just so precious. When we first got him each time we would leave and come home he would always be at the door waiting for us and he would always follow us around where ever we went it was so cute. Now he doesn’t he sleeps all the time, isn’t playful, just wants to be left alone. I tried calling the Hartz company but they are closed but I will try again when Monday comes. I sent them an email but somehow i doubt they are going to get back to me. I just can’t take this anymore watching him suffer. I don’t want to lose my baby!!!! They should take their killer products off the shelves and be closed down!!! NEVER USE THEIR PRODUCTS!!! THEY ARE DEADLY!!!!