Weeds & Pests

Vole Trails Under the Snow: Prevention Now

When the snow melts, some lawns are covered in winding dead trails. That's voles. Why they do it, how to cut down the damage this fall, and how to fix the trails in spring.

Jack · golf course superintendent·3 min read·October 4, 2026

Every spring someone asks me what happened to their lawn: winding brown trails an inch or two wide, crisscrossing the yard like a maze. That's vole damage. Voles spend the winter tunneling under the snow, eating grass, roots and bark where nothing can see them. You can't stop every vole, but what you do this fall makes a big difference.

What voles are

Voles are small, stocky rodents, often called meadow mice or field mice. They look like a mouse with a short tail and small ears. Unlike moles, which eat insects and dig deep tunnels, voles eat plants: grass blades, roots, bulbs and the bark of young trees and shrubs.

In winter, snow gives them cover from hawks, owls and cats. They make surface runways under the snow, grazing the grass down to the soil as they go.

Why the damage shows up in spring

You won't see anything until the snow melts. Then you find:

Surface runways: narrow, winding paths where the grass is chewed down to the ground.
Small holes where the runways go into burrows.
Chewed bark at the base of young trees and shrubs, sometimes all the way around the trunk.

The good news: lawn runway damage is usually shallow. The grass crowns are often still alive, and the lawn fills back in.

What to do this fall

1. Mow short for the last cut

Long grass going into winter gives voles more cover and more food. A slightly shorter final mow helps. See when to stop mowing for the season.

2. Clean up cover

Rake or mulch leaves so there aren't thick mats on the lawn.
Trim tall grass and weeds along fences, beds and foundations.
Don't leave piles of brush, boards or debris near the lawn.

3. Pull mulch back from trees

Mulch piled against trunks is a perfect vole hideout. Keep mulch a few inches away from the bark.

4. Protect young trees and shrubs

Put a cylinder of quarter-inch hardware cloth around the base of young trees, buried a couple of inches into the soil. See wrapping young trees.

5. Watch bird feeders

Spilled seed under feeders feeds voles all winter. Move feeders away from the lawn and beds, or use a tray to catch seed.

6. Shovel or spread snow along edges

Where snow piles up deep along foundations and beds, voles have the best cover. Spreading snow piles out or keeping them away from vulnerable plants reduces damage.

Do repellents and traps work?

Repellents (often castor oil based) can help in small areas but need reapplying.
Mouse snap traps baited with peanut butter or apple, set in runways and covered with a box, work for small numbers in fall.
Poison baits are risky for pets, kids and the hawks and owls that eat voles. I don't recommend them around homes.

Owls, hawks, foxes and cats are the best vole control there is.

Fixing trails in spring

Rake the runways lightly to remove dead grass and debris.
Wait a couple of weeks. Many runways green up on their own as the grass recovers.
Topdress and seed spots that stay bare.
Fertilize lightly in spring to help recovery.

Most vole damage looks worse than it is. A clean fall yard and a little patience in spring take care of most of it.

Photo by MrsBrown on Pixabay.