I once heard on one of those satelite channels that you should make the pepper and cayenne mixture and put some in a balloon, blow it up, tie it and then put in in a hole in the area your dog digs the most. (they said that dogs usually dig that same area over and over again). You are supposed to bury the balloon where he will dig it up. Once he has dug up a balloon or two and had it pop, they usually stop digging. Don't know if it is true since Ricky is mostly an indoor dog or on a leash.