Safe and long-lasting, Bird and Reptile Litter is the perfect natural environment for all birds and reptiles. Features include: unique dehydration process kills bacteria, mold, and mold forming spores; processed from 100 percent recycled, biodegradable northern hardwood; does not swell when exposed to moisture; may be used as is for dry habitats or moistened for humid environments; hardwood chips dried to increase absorbency; no harmful chemicals or perfumes added.