I've started leaving Jonah out for a few hours in my 1/2 acre "pasture" that is totally fenced in. For entertainment he has started digging in a few spots. So, has anyone tried building a sandbox to help directing where digging is appropriate? I've thought about putting his toys in there and let him go to town in the sandbox so he will quit digging up the plants on my Border Collie's grave!!! Any advice on this will sure be helpful.