Cature Smart Pellets are made of natural woods. These pallets do not stick to the paw's body, stay in the tray. The micro-fine fibrils trap the liquid inside the natural organic fibers. A single package can last 30 days per cat! In only 10 seconds, the litter can absorb all the liquid and lock odor super effectively. Sustainable Biodegradable Flushable Naturally anti-bacterial Super Odor Control: Control odor for up to 7 days without scooping. Quantity: 2.4 Kg.