Good product, silent on delivery, makes some slight noise now after three months but nothing that will disturb yourself or your pet. Easily cleaned, I know some have had issue with that, but not a problem every two weeks or thereabouts.
One point, it may very well be our water source but the filters while probably still usable physically restrict water flow after about two months use, so be prepared for replacement filters.
Easy set up, easy maintenance, and the critters will use it after that initial period of suspicion. Would easily buy another to replace in time.