Digging dogs advice.
Has anyone got any tips for dealing with a digging dog? I have designed a planting scheme and been asked to plant borders for a client who has simultaneously aquired a new puppy. It seems that the puppy has taken a shine to the (currently empty) borders and is now helping to dig them up. Other than the obvious training the dog (which I'm sure the owners will do but imagine it takes a while) or building a fence to keep it out, has anyone got any tips?