This was pretty easy to put together. It was a little intimidating to take all the parts and hardware out of the box but the instructions were pretty easy to understand and they had each different piece of hardware in labeled bags which was awesome. This holds a big litter box with about 4-6" of space that litter can drop off paws before the cat leaves the enclosure. There is still a little litter outside the enclosure on the floor but it keeps it much more contained than a regular litter box. The top fits food and water for my 2 good-sized male cats, and they've gotten used to the whole thing quite quickly. The enclosure doesn't contain the smell great when the box is dirty, but it doesn't hold onto smells once you clean it out, so as long as you keep the box clean, the smell won't be bad.