Bella was a digger too! She especially liked to dig in my flower bed after a nice rain. I put large slate pieces in the flower bed to discourage her and she just went and started holes in other places. From the first day we got Ripley the digging stopped. I think she was digging out of total boredom. Now that she has a buddy in the yard she hasn't even attempted to dig. What you need is to add another dog!