i have had some success with the electric collar. but you have to keep the dog in a kennel when you are not around until it is fully train. what i do is i sit inside my house, let the dog loose and i spy on him. i then get a friend to throw food over the fence. the minute the dog touches the food he gets the electric shock. in time he will learn to associate the food with a shock and he will not touch anything lying aroud in the yard :wink: