My 6 month old puppy has started digging. She has found bits of the lawn where it was a bit patchy and has started digging in those places. Has anyone got any ideas how to stop her doing it? We have put down new turf on the holes and covered them up with metal playpen sides, but there are lots of other places for her to dig. I didn't let her go in the garden by herself today and I think she was really frustrated.