The ScoopFree® disposable litter tray is the reason you can leave ScoopFree® self-cleaning litter boxes alone for weeks at a time. With disposable trays, you don't have to see, touch or smell messy waste. Simply replace the disposable tray every few weeks and your ScoopFree® litter box is just like new. Each tray is pre-filled with Premium Blue Crystals litter for unbeatable odour control that's 5 times more effective than regular clay and clumping litters. Low-tracking and odour-reducing crystal litter keeps your home litter-free and smelling great.