Anytime we've noticed little holes in the yard, obviously I can't yell but I make a fuss "oh no, no digging, no digging" as I rake up the spot. It was a daily ritual for a while, but now the only time I see any signs of digging is mole/vole holes. Lakota grew out of it, she'll be 3 in January.
Apache - Shiloh Shepherd 12/15/02
Kiya - Shiloh Shepherd 5/15/04
Lakota - WGSD 1/13/10