Instruct: Classify Amazon reviews into positive or negative sentiment
Query: We stopped using it!

This thing is supposed to provide fresh water for your pets, right? Well we stopped using ours and went back to the old water bowl, because dust would build up on the surface of the water. The water flow was slow, not providing good filteration. The dish gets scummy fast, and the filters got nasty in just a couple of days. Before long we found mold in the filer and inside the machine. It is not easy to clean, and requires constant maintainance. We stopped using the filer for a while and it worked a little better, but what is the point of that? I wouldn't reccomend buying one - I'd give you ours if I could.