Kaytee Soft Granule Blend is made from wood fibers that are not suitable for paper production. Rather than be discarded, the fiber is converted into a soft, highly absorbent form that provides a great cage environment for small animals, birds and reptiles. It is soft, comfortable bedding that is great for nesting material. It has no aromatic oils or inks and helps control ammonia. Sanitized to aid in bacteria control, it's safe to flush. It's also great for nest boxes and baby bird nurseries.