Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not recommended for adverse environments

I bought this product for a Great Pyrenees, that weighs over 175 lbs. The product worked great for about two weeks, we took it off and recharged it and it lost its programming or something and now does not work. I have tried to reprogram it and it does not take. It is now 45 days after purchase and I just wasted 170.00 dollars. So the dog gets to go back on the leash or in the kennel, so the cat does not get eaten. I thought spend some money, get a good one, and everything would be great. Its not, its junk.