I was so excited about how easy this litter box would be to use/clean. I have two adult cats and have been using this litter box for about 2 weeks now - I'm so disappointed. The tilting action used to 'clean' the box works great with poop. It does not work with pee though. I don't think my cats are abnormal in their 'bathroom' habits. Whenever I go to do the tilt action (about twice a day) I notice that the pee spots stay stuck to the bottom or sides of the box. I end up cleaning it like a regular littler box every time.