I have been wanting this for several months now.  After awaiting for it to go on sale, I am very disappointed that I wasted the money.  It is extremely small, my old litter box would not fit in it and a very small regular pan fit, barely.  So, I was still excited until the cat missed the entire pan and there was cat urine inside the furniture itself, and on the floor.  The cat tried covering it up and kicked a bunch of litter out of the pan into the furntiure, which all came out after opening the door to try to clean it.  This took just 2 days and I am back to my old litter box.  It should come with a built in litter pan.