How to Keep Mice Out of Duct Work and Crawl Spaces

How to Keep Mice Out of Duct Work and Crawl Spaces
Written By
Lee Weal
Lee Weal
Published: Jul 4, 2011
Updated: Nov 20, 2021
2 minute read

The first step is to make your home as impenetrable as possible against rodents. The second step is to kill the mice in the area to prevent an infestation from occurring.

Things You Will Need

  • Wire mesh or hardware cloth
  • Duct tape
  • Tin snips or metal shears
  • Concrete patch material
  • Putty knife
  • Mouse or glue traps
  1. Seal off any entry points. Mice can squeeze into spaces as small as 1/2-inch. Walk around the exterior of your home and look for all areas that are vulnerable. Attach wire mesh or hardware cloth to duct openings and secure it with wire or duct tape.

  2. Repair any holes and cracks where the home's foundation meets the ground with concrete patching material.

  3. Cover the crawlspace with wire mesh or hardware cloth. This treatment will allow air to flow through while keeping rodents out as they cannot chew through metal.

  4. Bait wooden mouse traps with peanut butter and place them close to exterior walls where mice are likely to travel. Alternatively, use glue traps. Space traps about 10 feet apart. Check them frequently and re-bait as needed.

  5. Eliminate grass or bushes close to the home's foundation or cut it back. Rodents prefer to travel along walls under the cover of thick vegetation.

The Drip Cap

  • In search of food and shelter, rodents will enter a home any way they can, exposing your family to germs and disease.
  • The second step is to kill the mice in the area to prevent an infestation from occurring.
  • Cover the crawlspace with wire mesh or hardware cloth.
  • Space traps about 10 feet apart.

Photo Credits

John Foxx/Stockbyte/Getty Images

John Foxx/Stockbyte/Getty Images

Lee Weal

Lee Weal began writing and editing online content as a corporate intranet administrator in 2000 and was also the publisher and editor of a monthly employee newsletter. Her articles specialize in children's issues and home improvement.

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