I love this kitty loo! It took 2 of us about 2-1/2 hours to assemble -- instructions were easy to understand, but sometimes it's just easier with 2 extra hands. There is hardly any tracking (put a mat on the floor where they go in and out), and unless you're in the room, the smell is almost nonexistent. It's a little awkward to clean (a pull out tray that the litter box sits on would be ideal), but I love everything else about it, so that's a minor point for me. Highly recommend!
Rating: [5 of 5 Stars!]