Monitor orchards frequently so control measures can be implemented before appreciable damage occurs. Most damage occurs in the winter when voles move through their grass runways under the protection of snow. The greatest damage seems to coincide with years of heavy snowfall. 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.