Bio-Serv Wood Gnawing Blocks offer essential environmental enrichment for lab animals, promoting natural gnawing behavior. Made from high-quality kiln-dried hardwood, these medium-sized blocks are designed to minimize loss through cage flooring and are autoclavable for contamination control. Each box contains 175 certified blocks, ensuring high standards for animal welfare. These uniquely crafted, cube-shaped blocks provide a natural outlet for gnawing instincts, setting them apart in the market.