I got rid of the voles, moles and mice tunneling through my lawn by spraying the lawn in the late fall with castor oil. Have had zero damage from any critter in the last 3 years. If you do this, make sure you buy a natural castor oil that has not been deodorized. The unscented one you find in most drug stores will not work. Plenty of the natural one can be found with Google.
I got rid of the voles, moles and mice tunneling through my lawn by spraying the lawn in the late fall with castor oil. Have had zero damage from any critter in the last 3 years. If you do this, make sure you buy a natural castor oil that has not been deodorized. The unscented one you find in most drug stores will not work. Plenty of the natural one can be found with Google.