Kaytee Walnut Litter consists of natural crushed walnut shells and is specially processed to eliminate dust or debris found in other brands Does not stick or cling to cage allowing for easy clean up|99% dust free|Recommended to be used as a non-contact bedding Kaytee Walnut Litter consists of natural crushed walnut shells and is specially processed to eliminate dust or debris found in other brands. Kaytee Walnut Litter consists of natural crushed walnut shells and is specially processed to eliminate dust or debris found in other brands.