This litter box really makes owning a cat so easy. No more time spending scooping clumps! This rakes through the crystals and traps the solid waste in a magnetized compartment. The box keeps track of each time it is used. I especially like that the time can be set for when you want it to be activated, up to 20 minutes. You don't have to worry about it going off when your cat is using it. The liquid waste is absorbed by the crystals. You may need to stir a little if your cat always goes in the same place. This lasts me about a month with two cats, but they do have other boxes, so if you only have one, you may need to change it sooner. When it's time, you just change out the tray and dispose of the used one. So easy!