Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not for BIG cats

I bought this as a 2nd choice because the box that I wanted was not in stock at the pet store. It's nice in that a lot of litter doesn't spill out BUT once I put the top on they peed and pooped on the top and not in the box. Plus you can only have a little litter in the box or they can't get in the hole, so you're filling up every few days, which is hard on the back. The big cats need lots of room to maneuver and this doesn't have it. The one I plan to go back and get is a larger style front opening litter box that has a plastic door over the opening much like a hole in the door for a dog. It was the same price as this and this is not worth the price. Now it might be okay if you had a small kitten and trained it from the get-go.