I bought 2 of these because I have 3 cats and they use whatever litter box is available.  I have one on the lanai and it looks really nice and when company comes it can be turned around so the opening is in the back near the wall.  the other is in the master bathroom so my one skittish cat can be comfortable staying inside. The litter doesn't go all over the place like with open litter boxes. Two of my cats are large 15 lbs. and have no problems with using this.  The only problem I have is putting the top back on easily. I wish the makers had put a better ridge for lining up the top to the bottom.  After several times I pretty much got the hang of it.  I do like them, best of all my cats like them and I would recommend this product.