Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not impressed

I have two long-haired cats, and within a week the pump was completely clogged. The little grate that keeps hair out of the pump is almost useless. Taking it completely apart and cleaning did restore flow for a bit, but now, after a couple of months, even that doesn't work anymore. The 'waterfall' has slowed to a trickle, and I suspect the pump is just about dead. Also, the bottle only holds a day or so of water, so for longer trips, I have to break out my old gravity-feed bottle anyway.