[100% Biodegradable. Healthy and safe for cat] - 'I AM TOFU' is naturally made by soya bean and corn starch. It does not contain any synthetic additives, chemicals, and clay. | [Flushable & Dust Free] - Fast dissolve and safe to flush. 99% Dust-free and no-tracking. | [Instant clumping and easy to scoop] - Use natural clumping formula and clump within few minutes. No more scraping the sides or bottom of the litter box. | [Strong absorption rate] - 400% absorption ability which means it can absorb up to 4 times their weight. | Litter with 6 lb can last 3 to 4 weeks for one cat. DO NOT use with self- washing litter box.