From a permaculture mindset, managing voles usually comes down to predator support and habitat adjustment rather than eradicating them completely:
Clear the Mulch Ring: Voles hate feeling exposed to raptors and snakes. Keep thick mulch pulled back at least 6 to 12 inches from the trunks of your young trees and woody perennials so they don't have cozy cover to gnaw on bark.
Invite Aerial Predators: Putting up tall raptor perches (a simple 12–15 ft T-pole) near the problem zones gives hawks and owls the perfect vantage point to hunt them down day and night.
Physical Barriers for Key Beds: Sinking 1/4" galvanized hardware cloth 6 to 8 inches into the ground around high-value raised beds or fruit tree root zones stops their tunneling cold.
Companion Planting: Planting alliums (garlic, chives) or daffodils around vulnerable roots acts as a decent natural deterrent since they avoid eating bitter/toxic bulbs.
Are they mostly targeting your root crops and garden beds, or chewing on young fruit tree bark?
