ScoopFree LT2-R3 Litter Tray Refills with 'Free' Crystals, 6-pack Includes 6 trays, 6 bags of premium crystal litter and 6 disposal bags Litter is completely free of perfumes and dyes and tray is made of recycled paper with no bleach added No lid means trays can nest, so its easier to stack and store in small spaces Completely disposable, so you dont have to see, touch or smell messy waste Crystal litter absorbs moisture immediately and dehydrates solids for superior odor control. The tray's plastic lining helps prevent leakage.