ABM wood pellet bedding is made of pine and other soft wood.  It's an all natural animal bedding that breaks down eaily and has a high absorption capacity.  ABM is commonly used in horse stalls, dog kennels, and littler boxes. 

From the manufacturer:

"Eagle Valley ABM is manufactured of 100% whitewood with approximately 4% moisture content. This makes our product more absorbent than traditional wood shavings, crumbled newspaper or corn cob materials. Compared to regular wood shavings, our product will absorb more moisture, greatly suppresses ammonia, and provides a cleaner, safer and more pleasant living environment for your animals.

Pine, a natural deodorizer, controls ammonia the natural way. There are NO ADDITIVES or CHEMICALS in our production process. Eagle Valley ABM will keep your stalls, cages or pens drier, brighter and healthier."