I am doing battle with the voles and they are winning. They're cute little things but they eat tender plants and make holes all over the garden. It is my own fault. I brought in many yards of top soil and bermed it above my rocky soil. They love it.
I don't want to use poison bait, that would endanger the birds and the snakes when they emerge in spring. I have been using smoke bombs, so far to no effect. Maybe the will get tired of the smoke in their burrows and go back to the open space where they belong.