My girl kitties love this enclosure as it gives them much needed privacy for their business. The holes are perfect for smallerslimmer cats I dont think larger or male cats will enjoy trying to fit themselves through that gap. The sisal doors are also used by my cats. The middle part catches excess sand quite well but i also placed a mat in front just for extra dust collecting. I wish there were legs so that the whole thing isnt on the groundcarpet but thanks to the stickers it slides easily on the tile floorcarpet. I do have to get new litter boxes as mine are too big!