My cat really dug his kitty fountain but my overall experience with this thing was kind of bad. Yes it recycles the water a bit and keeps it fresher than say a stagnant water filled bowl but it seemed to collect lots of crud and hair that never makes it through the tiny hole to the filter. The reserve tank was useless...the water level never went down when the water was circulating so it was a pretty big waste of water. Also, the thing makes terrible noise when not completely full (but the reserve tank never worked) so you have to dump water in it all the time or else listen to this loud grinding sound. After, 7 or 8 months the pump conked out completely and so I went and bought a Drinkwell for my boy today. The Drinkwell is superior in every way and kitty is happier with it.