Eco Start to Finish Eco cat litter starts its life cycle locally at farms near our Midwest facility. Our farm partners practice sustainable farming called conservation tillage to help reduce environmental damage and promote climate and soil health. Eco is an all-natural, eco-friendly, and biodegradable litter made with soft red wheat and perennial rye, a natural odor stopper that neutralizes odors. Its recyclable packaging completes a life cycle that is more gentle on the planet.