PeeWee wood pellets are 100% natural and biodegradable. The wood pellets are made from Saw Dust carefully selected from Swedish trees. The sawdust from these trees has great absorbing capacities and neutralizes the smell of ammonia. Unlike other wood pellets, no leaves or bark is used in our pellets. Furthermore, nothing is added during the production process; no fragrances, glue, binder or other chemical substances. The sawdust is pressed pure and only under high pressure. This also prevents the pellets from rotting or freezing.