Walnut based litter for cats. Clay-free. Chemical-free. Corn-free. Grain-free. 2.5 to 7x the odor control of leading pellet litters (In an independent study commissioned by Blue Buffalo, Blue Naturally Fresh litter was found to control ammonia odors better than the leading non-clumping litters). Virtually no dust. Low tracking. Up to 7x the odor control of leading non-clumping litter (In an independent study commissioned by Blue Buffalo, Blue Naturally Fresh litter was found to control ammonia odors better than the leading non-clumping litters). When it comes to choosing a cat litter, most pet parents value odor control above all else. Blue Naturally Fresh is made with a proprietary blend of fibrous materials found only in walnut shells, which lab tests have shown neutralize odor better than other brands of non-clumping litters-including clay, pine, corn and wheat! Virtually No Dust: Unlike clay litter, which often throws off silica dust, Blue Naturally Fresh is virtually dust-free so you and your cat can breathe easier! Low Tracking: Blue Naturally Fresh doesn't stick to your cat's paws so its less likely to be tracked throughout the house. 100% Natural & Eco-Friendly: 100% natural and biodegradable (Blue Naturally Fresh litter is biodegradable if composted or disposed of in a similar fashion. Landfill disposal of litter in plastic bags is not conducive to biodegradation), Blue Naturally Fresh is made from annually renewable agricultural resources. No Chemicals, No Toxins, No Worries: Made without any harmful ingredients, Blue Naturally Fresh is safe for you and your cat or kitten. Find out why Blue Naturally Fresh is right for your cat. Blue Healthy Home: The Blue Healthy Home symbol is your assurance that this product is all-natural, toxin-free and of the highest quality. 100% biodegradable. 100% annually renewable. For more information on Blue visit www.BlueNaturallyFresh.com or call us at 1-800-919-2833. USA-Made: All of the walnut shells used to make Blue Naturally Fresh are homegrown in the USA!