Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Broke the first week

The collar worked great for the first two days and then it just stopped working. I thought that maybe the fluid might be out or the battery died so I replaced both. Nothing worked. So me trying to save money by buying this online actually ended up costing me more because now I have a collar that doesn't work that I can't take back and a couple of 6 volt batteries that I can use anywhere else. The collar seemed to work fine but I would look at buying it at a local store in case something like this happens.