Petfive presents Sustainably Yours Multi-Cat Large Grains cat litter. It is made with a formulation of corn and cassava, two all-natural, sustainable ingredients. Cassava is also rich in starch, which helps the litter clump faster and firmer, trapping any residual odors. The light color of the litter makes it easy for pet owners to keep the litterbox tidy and spot differences in their cat’s urine. In addition to being chemical and fragrance free, it’s made in a proprietary way that virtually eliminates dust.