Winter Vole Damage - help

So the snow is gone, and now I can see all the trails left behind by the voles.  So far I know I have lost at least one hosta to their winter eating.  I have yet to find a foolproof way of getting rid of them.  So if anyone has some ideas I would love to hear them!  I am hoping having a dog again might keep them out.

Vole trails in one of my hosta beds.