Arrived with very easy to use instructions (including how to assemble with entry at either side) and is quite attractive, although I wish the lid rail was optional (I didn't add it but dislike the open screw holes!).  The pan size to fit is very small, shallow and because the chamber size is also small, it generally forces the cat to eliminate at the doorway-end of the pan, which means it's functionally even smaller.  At one point, my cat urinated on the edge of the pan, which dripped over the side and underneath the pan, LEAKING through the bottom edge of the chest, all over the floor.  I caulked the interior after that and lined it with a plastic mat over a towel just in case.  They tend to kick litter into the entry, but at least it stays in the chest. It would probably work better for smaller cats who are not diggers like my boys and generally requires frequent scooping due to the size.