Since voles are excellent diggers, place the bottom of the guard 6 inches below the soil surface. Use of snap-type mouse traps may be effective in eliminating small populations or reducing their numbers to reduce their damage. Traps should be placed with the bait side in the runway. Baits of peanut butter and oatmeal or apple slices may be effective. Live traps may also be employed.
Anticoagulant baits are also effective, though multiple feedings are required for control.
Repellents are not usually effective. Such baits should be used only by commercial orchards or nurseries. Other than broadcast and hand placements, baits can be placed in various types of waterproof paper tubes. The tubes should be 5 inches long by 1.5 inches in diameter with the bait glued inside the tube. John C. Nye, Dean and Director.