moles are after grubs and worms, so they have a purpose that's good in some ways....
voles do nothing but eat plants and breed....
"Voles multiply rapidly. They do not hibernate. I don't think they do anything but eat and breed. If a problem is found, act at once. The damage they can do in a short period is amazing. Before we noticed an infestation at the back of our nursery, they ruined 85 red contorted willow trees in 5 gallon pots with a combined value of $4,165.00 in less than two weeks. We have also had them kill an Apple tree that has a trunk diameter of 4-1/2" by eating of all of the cambium below ground."
