Blue Naturally Fresh Ultra Odor Control Multi-Cat Quick-Clumping Cat Litter 6-lb 6 lb bag Because BLUE Naturally Fresh is so absorbent, one bag of BLUE is equal to three bags of the leading clay litter Unlike clay litters which throw off silica dust, BLUE Naturally Fresh is virtually dust-free so you and your cat can breathe easy. And because it doesnt stick to your cats paws, it wont be tracked throughout your house 100% natural and environmentally-friendly