Ok, If you own the Barbie w/ the dog that poops and feel compelled to buy the cat that pees DON'T! It's a total pain in the butt! First off your using water, the cat does'nt drink it very well so theres water everywhere, then you got sand in the little box everywhere! If you like cleaning up after Barbie and kitty go for it! Not for me, my daughter wasn't that thrilled with it either.