Environmentally friendly: The main ingredient is made from recycled wood powder. By using recycled materials, we contribute to a circulation society. Small and hardening: It quickly hardens small and is easy to clean. It hardens in a small amount so it can be used economically. Hardness may vary depending on the individual differences in your cat. Deodorizing/Silver ion: Deodorizing effect is caused by phytonchids in the wood components. Removes ammonia odors from urine odors. The silver ionized water formula is safe for people and pets, so you can use it with confidence. Flushable and flamable: Only the absorbed portion of the urine can be flushed into the toilet, so it is easy to handle. Wood powder is the main ingredient, so it can also be treated as combustible waste. Bentonite Free: Bentonite (clay minerals) are not used, so it is lightweight and easy to carry.