First the construction and quality of the piece is just as it should be it is well made. However after only a few weeks of owning this I already have to throw it away because if I cat sprays the wall behind the box it will warp and the box just reeks of urine. You can't get a tall box really in it because it would be difficult for a cat to get into a taller box in this enclosure. I just think the idea is actually not a good one after going through this process.