It works fine, but my cat won't use it.I was thrilled with the reviews I read about this fountain and happily set it up as soon as it arrived. Unfortunately, I like it better than my cat does. He largely ignores it and still prefers to drink out of the bathtub or a glass. Oh well.Before you buy, make sure it's not the sound of the water that attracts your cat. This fountain has no water sound (pretty quite, actually). I think that's why my cat ignores it.