You won't be climbing the walls if you take those exuberant 9-year-olds rock climbing. No need to head for the Rockies -- just book a session at a licensed rock/wall climbing facility with a party room, let protective parents tag along to mind any space cadets, and send the lads --...
Rinse the cowhide thoroughly to remove the water and bleach mixture, then soak it for 24 hours in a non-metallic bucket or container full of water mixed with salt. When you remove it, rinse it thoroughly in water. Stretch the cowhide flat with the hairy side down, then rub it with it ...