Destroy old runways or burrows to deter immigration of new voles to the site. Bury dead voles or place them in plastic bags in the trash. Be sure to keep small children and pets out of the area where you have set traps. Baiting When voles are numerous or when damage occurs over large areas, toxic baits may be the quickest and most practical means of control. They are probably the safest type of rodent bait for use around homes and gardens because they are slow acting, must be consumed over a period of 5 or more days to be effective, and there is an effective antidote, Vitamin K1.
Anticoagulant baits are available at many county agriculture commissioners' offices.
Because the pest must feed on anticoagulant baits over a period of 5 days, the bait must be available until the vole population is controlled. Usually baiting every other day for 5 days is effective. As with trapping, bait placement is very important. Using a bait applicator that is used only for that purpose, place the amount of bait recommended on the product label in runways or next to burrows so voles will find it during their normal travels. When broadcasting bait, be sure to spread it evenly over the infested area.