Instruct: Classify the given review into positive or negative sentiment.
Query: Too large for my dog

The color was a bit too large for my dog, and the transmitter had dead spots in it. It didn't always beep or shock. We ended up not even using it cuz my dog still ran away. I'd actually like my money back. I think it might work with a larger dog and differently built house. Mine has too much cement and I think it block the signal. Plus I have a large family and there are always 6 cars in our drive way.