This Dr. Pol 25lb bag of Pine Pellet Cat Litter is made of 100% natural pine and is healthier for your cat, easier for you, and better for the environment. This superior alternative to unhealthy clay and silica- based products is instinctively attractive to cats, has superior odor control, is super absorbent, dust free, and easy to clean. Dr. Pol litter is environmentally friendly with no added chemicals and USDA certified compostable and biodegradable. Our Dr. Pol cat litter is 100% natural and uses only the highest quality raw materials.