Brief description: Raisin boards are plastic boards with small raisin sized holes drilled in them. Chimpanzees must use tools to push out the raisins.
Materials: Trex composite decking, eye bolt, chain, fire hose
Assembly instructions: Drill multiple raisin sized holes into piece of decking material, Attach eye bolt to the top of the board and attach a small length of chain to the bolt. Cover the chain with fire hose.
How to use: Raisins are pushed into each hole. Use a padlock to attach them to the inside and outside of the caging. Give each chimpanzee a tool to use (chop sticks work great).
Price: Approximately $7 per board.