I love my CatGenie and I'll never go back to ordinary cat boxes, but I have to agree with the reviewers requesting smaller holes. My cats are all weird and always eating something strange that doesn't get caught by the vertical slits (toilet paper, peas as mentioned by another reviewer, chewed bits of my rubber exercise mats, unchewed bits of dry crunchy treats that seem to pass through undigested, etc). I still have to occasionally scoop those out by hand (I use the tiny scoops they sell in pet stores for hermit crabs LOL). But this is a small price to pay for the convenience and cleanliness of this product. Did I mention I LOVE my CatGenie???