Litter box recommendations by: Healthy Cat Smart

To avoid lung disease, stay away from cat litters which contain silica, clay and heavy perfumes. These ingredients not only hurt your cat's lungs but can aggravate allergies in humans too. We recommend natural, biodegradable litters made of corn husk or wheat. These are better for your cat and help the environment too.

For cats who are new to litter boxes or cats with behavior issues, try Dr. Elsey's line of Cat-Attract litters. We have found these work very well. Once trained, make the switch back to biodegradable litters by mixing the old and new type of litter in a 50/50 mix.