I bought a fountain out of one of those "gadget" catalogs. My cats used it for a while but then went back to the water bowl. It was actually the 3rd fountain I bought. My cats seem to like drinking out of my "serenity" fountain (the one with the rocks). So I clean that out every week and keep it filled with filtered water. What the heck. At least I know they're drinking. Maybe I should just put it on the floor next to their dishes .