We have a 10 lb. Jack-Chi that we gave Sargeant’s Gold flea and tick too yesterday. She had a flea, and being here mama, I thought, well, if there is one, she probably has others. I gave her the formula on her back as directed for her weight. Not even 2 minutes later she was runnung around trying to get the stuff off her back and then hiding from us. I gave her a bath, not even 10 minutes later to get the stuff off. Night time came and she slept by my leg all night shaking and hallusinating. She was jumping around like something was chasing her and would not eat, drink or sleep. At one point she started panting very hard and that is where I started to cry thinking I poisoned my little girl. I called the 24 emergency vet and told her about the Sargeant’s flea and tick and he suggested I wash her, which I had done, and then told me that stuff was like legalized poison on shelves! It has now been about 24 hours and she is just starting to act normal. The scariest experience I have gone through. DO NOT USE THIS PRODUCT!!