Instruct: Classify the given Amazon review as either positive or negative.
Query: WARNING!!! BURNED MY POOR DOG!!! DON'T BUY!!!

I normally do not rate products, but I am compelled to do so because I am disgusted beyond belief at what this did to my dog. We noticed some wetness around her neck and found a HUGE wound under the collar where the contacts touch her skin. We had to clip away her hair and treat her burn. TERRIBLE! As much as the silence of a non-excessive barking dog seems great, the thought of what it did to her just makes me sick to my stomach. :( Don't buy this product. IT IS NOT SAFE! My daughter and I were in tears when we saw what our poor dog had to suffer. I would much rather have her bark than put her through that type of injury.