I have mobility issues that make it difficult to care for my cats' litter box so I was super excited to give this a try, and I'm so glad I did! No more mess to clean, no more expensive clay litter. SO many benefits. It automatically scoops the box after a cat goes on the litter and then you empty the tray once a week or so. The crystal litter seems to last a lot longer than traditional litter, there's no smell anymore because it's automatically disposed of, and harder for cats to track litter out of the box. I'm in love! excellent product all around.