This ScoopFree Self-Cleaning Litter Box is very convenient and easy to use.  The motor is quiet and the sweeper bar works well.  It's very nice not to have to scoop out a litter box a couple times a day.  I love that I can just throw away the whole litter tray at the end of the week instead of trying to pour a box of litter into a trash bag.  This is much more sanitary. [This review was collected as part of a promotion.]