Instruct: Classify a review as either positive or negative.
Query: It Didn't Work for Me

My cats drink a lot of water, and the resulting output consists of large clumps. Some were too large for the drawer because there was too much un-clumped litter in it. I didn't really have a good place to roll the box, and, as a result, usually managed to scatter litter on the floor during the roll. I used it for 3 weeks before I gave it away.Omega Paw Self-Cleaning Litter Box, Large, Green and Beige