Make sure to cover the traps, so other animals don't get trapped. If your prized fruit or ornamental tree gets damaged this winter, you can try bridge grafting the damaged area. Remember, if they completely girdle the tree around the total trunk, the tree will die. Therefore, you must try to bridge graft the damaged area. First identify what type of damage is taking place.
Moles prefer insects as their choice of food, where as, voles are plant eaters.