The Best Way to Get Rid of Field Mice
- 1). Store all garbage on your property in containers with secure lids. If you don't provide a food source for the field mice, they will look elsewhere.
- 2). Clean up your yard, and keep it mowed. Remove any covered areas where field mice could hide.
- 3). Walk around the perimeter of your house and identify any holes where a mouse could burrow. Plug any holes. You could use boards, caulk and steel wool.
- 4). Set mouse traps where you have seen field mice. Place dead mice inside a plastic bag and seal it before discarding.
- 5). Use poison baits outside. Don't use them inside because you would run the risk of the poison taking effect while the mice are inside of your walls.
Source...