I bought this liter box in hopes that it would make my life easier. However, after owning it for almost a year I found that the product design is majorly flawed. The box is not one solid piece, it is two halves held together by plastic clips. While I had no problem with the clips I found that over time every time the box is rolled litter comes out the bottom where the two halves meet. The concept is great, but in order for this thing to actually work properly it should be one solid piece and not two halves. I found this to thing to be more trouble then it was worth because every time it was rolled to clean the box there was a pile of litter on the floor that then needed to be swept up. Don't waste your time with this product.