Damage to Crops, such as alfalfa, clover, potatoes, carrots, beets and turnips, is common and most evident when voles are at high population levels. Runways and tunnel systems constructed in agricultural fields can divert irrigation water. Voles often damage lawns and golf courses by constructing runways and burrow systems. Gnawed stems may have a pointed tip. Do not confuse vole damage with damage by rabbits, which includes stems clipped at a smooth 45-degree angle and wider gnaw marks.
Stems browsed by deer usually have a rough jagged edge.
Voles also girdle the roots of trees and shrubs. Trees that appear to suffer from disease or insect infestation may be suffering from unseen vole damage. Methods to prevent and control damage are habitat management, exclusion, repellents, trapping, and poison grain baits. Voles are classified as non-game wildlife in Colorado and may be captured or killed when they create a nuisance or cause property damage. Habitat Management Elimination of ground cover of weeds and tall grasses by frequent and close mowing, tilling, or herbicide application is the most successful and longest lasting method to reduce vole damage to orchards.