The Andersons Bed-r'Nest 4G 1600CS is a ready-to-use enrichment material crafted from 100% virgin kraft paper. Designed for laboratory mice and rodents, it promotes instinctive nest-building behaviors while aiding in thermoregulation, reducing stress for animals. With virtually dust-free strands, this product offers immediate access to nesting material and minimizes fiber residue, ensuring a cleaner cage environment. It provides a consistent cost per cage, distinguishing it from other products in the market.