The most effective cat litter you can buy! It's so effective you only need one inch. Feline Pine is made from selected, scrapped pine lumber. It is kiln-dried before processing and compressed into clean, sterile pellets that are 100% pure and natural. This pure pine litter naturally destroys odors. Chemical-free formula is environmentally compatible. The non-tracking formula is dust free, making it healthier for you and your cat. So healthy it's recommended for kittens and post-surgical cats.