Aristo-Cats® Tofu Cat Litter is a natural cat litter using tofu (beancurd), tofu as the main ingredient is safe to both the owners and pets, even if it is accidentally consumed by your pet. Aristo-Cats® Tofu Cat Litter is environmental friendly and used tofu cat litter is a good fertilizer for your garden’s green. Aristo-Cats® Tofu Cat Litter is biodegradable and toilet flushable, it has the ability to absorb liquid up to 3 times of its own weight therefore making it economical and safe to use. Aristo-Cats® Tofu Activated Carbon Cat Litter. Activated Carbon, a good source of purification properties that potentially control harmful & unpleasant odors has been included to effectively control odors both inside & surrounding of the cat litter tray.