The 3 Pack of ScoopFree Litter Tray Refill with Premium Blue Crystals is the reason you can leave the ScoopFree self-cleaning litter box alone for months at a time.
The tray is completely disposable for hands-off convenience. It is pre-filled with Premium Blue Crystals litter, which has been proven to provide unbeatable odor control. 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. Designed for use with ScoopFree self-cleaning litter boxes.