Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Resevoir Problem

I have had this fountain for over 6 months and it has worked great up until now. I don't clean it as often as I should and that has not been a problem. One time the water wasn't pouring out of the spout so I opened it up and saw that there was hair around the motor, after I removed that, it seemed to fix that problem. The one problem I am having is that sometimes, if I let the fountain go too long without refilling it (like if I've been a way for a few days)when I refill it, the reservoir continues to fill the fountain until it is overflowing, it doesn't stop itself. Has anyone had this problem or know how to fix it?