“Pros: Box has excellent design. Easy to set up and for cats to step in and out. Litter clumps up very well. Cat can't "hang" their bottoms over the side and miss the box. They seem to like the high sides and did not hesitate to use the box when I switched to KP. Cons: Litter clumps can get wet and stick to the cardboard bottom. It's almost impossible to scoop clumps that contact the cardboard, so they stay in the box and smell. I think it's because there's not enough litter. I always have to buy a back-up bag of litter to make it through the month (two indoor/outdoor cats use it). Also, the deodorant/scent control could be stronger. Recommendation: Double the amount of litter, improve odor-control.”