Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Unless you enjoy cleaning the bowl often - do not buy.

The water bowl works - and it wasn't terribly difficult to clean every 2 weeks (per the recommendation). It takes about 30-45 minutes to clean. The problem now is that we actually let it go for 3 weeks and now the thing is a mess. Yellow gunk that used to easily wipe off after 2 weeks is requiring a significant amount of scrubbing.I will probably have to use a wire brush if I don't decide to just scrap it. It's currently sitting in the sink soaking because it was taking a lot of scrubbing to get the residue off. And I haven't even started on the small parts that require a q-tip and toothbrush to access.I'm not saying the product doesn't work as advertised, but be prepared to be cleaning...often.