This is the second one we are getting for the vacation home and it serves 3 cats. In the first one, the button that closes it broke, and generally, there is a weakness in the plastic at this point because it is fragile. It's better not to try to lift it with the litter inside! The cats use it comfortably and it cleans easily. The filter "was eliminated" after a while, the cats were playing with it anyway... Just fine.