Since 1995, Eco Shell has been a proud premier grinder of all-natural walnut shells to provide pet product companies quality ingredients to be used in natural cat litter, pet bedding, and more! Since 1960, the Crain family has been growing and processing top-quality English walnuts in Sacramento Valley to be used in pet products, water filtration, cosmetics, and many more! Eco Shell has grown to become one of the largest walnut producing operations in the entire world! They use the highest quality state-of-the-art milling and processioning equipment for their walnuts. Eco-Shell offers controlled environment storage to ensure premium quality control. All Eco-Shell products are biodegradable, non-toxic, eco-friendly, sustainable, and cost effective. Walnut shell is a pet-safe, all-natural, and biodegradable alternative for cat litter, pet bedding, and more! Walnut shell is naturally dust-free,easy to clean, and can be used in composting. Eco-Shell has proudly been processing environmentally-friendly all-natural walnut shells for your pet's products for over the last 50 years!