Rhian loves digging (mainly for mice and moles) and of course tried to to so in the garden. But as she is never allowed there unsupervised, I can always stop it.
Well, nearly always.
If I'm eating a delicous dinner in the garden and she disappears around the corner of the house to the front garden, I can't be bothered immediately!

But if she doesn't reappear for a while I'll go and stop any excavations!
So gardens are not for peeing or digging, just for rolling and running around. That works very well and Rhian can enjoy her digging frenzies in appropriate outside areas.