Eco-Shell presents Naturally Fresh Cat Litter in Pellet Formula for all small animals. The nonclumping litter controls odor and, in addition to cats, it is ideal for small animals such as gerbils, rabbits, ferrets and puppies. It absorbs three times better than clay litter, is low tracking and is virtually dust free, the company reports. It is also all natural and biodegradable, which means it is safe for pets, owners and the environment, the company adds. The product is made with a proprietary blend of the fibrous materials found inside walnut shells that are grown in the USA.