ACP Premium Animal Bedding pellets are made with 100% natural wood fiber and contain no additives. The wood pellets are very dense, dry and super absorbent to providing an overall cleaner environment for animals. These pellets are greater than 90% pine and are 100% safe for use with all animals. The pellets absorb animal waste and odor-causing liquids making clean up much easier than using alternative bedding materials (straw, shavings, etc).