Next time he/she digs a hole fill it up with water and hold his nose down in it until you see a couple of bubbles(from his nose and then release. )>you don't want to drown him! if he does it again.repeat the action making sure you hold him/her in it until you see a couple of air bubbles and quickly release.They usualy don't dig after that.Sounds a little cruel but its just to scare them from digging and works on most dogs.Otherwiswe ask your brother to show you how to use it or buy another one from jeffers pet.com or walmart etc.