Mice do not seem like natural acrobats, and are quite close to the floor, so how do they get into your attic? As unlikely as it sounds, mice typically prefer to spend their time in attics because they are warm and have lots of insulation, which mice use for nesting material. Here’s how mice get into your attic and signs that they are up there.

Signs of Mice in Your Attic

The first sign of mice that most people notice is an odd rustling noise coming from the attic. Short of catching a glimpse of the mice (which might be challenging), what other signs can help you confirm that you have a mouse problem? Here are a few:

  • Damage: Think chewed up pieces of insulation, cardboard or other materials that might be used in a mouse nest.
  • Droppings: Mouse droppings are small black pellets.
  • Urine: You may find urine smell or stains. The stains will often be in thin lines where the mice travel, as mice sometimes use urine to indicate a trail.
  • Mouse nests: A mouse’s nest will be a small burrow at the end of a one-inch tunnel heading into the insulation.
  • Access damage: If there’s a more than just insulation in your attic, mice may also damage those materials, especially if it would help them access other parts of the home. You may find holes chewed into any drywall, vapor barriers, and other materials.
  • Sounds: Mice tend to make soft sounds such as scratching, rustling, squeaking. Mice are more active at night, so you may hear thudding or bumping once it gets dark out.

You don’t need to get into your attic yourself to confirm mice presence if you don’t want to. Your pest removal experts should be happy to get into your attic and bring you evidence of mice infestation before they set up traps or start repair work. Besides, some of these signs can indicate another kind of animal infestation, so it’s important to have the experts confirm it’s mice unless you’ve seen one.

How Do Mice Get into the Attic?

As you might imagine, it would be very challenging for a mouse to start on the main floor of your home and get into your attic. Instead, they start outside and find gaps and holes in your home, which lead to the attic. Mice may access your attic through:

  • Holes or gaps in the roof fascia (the wooden board behind the gutters)
  • Roof vents
  • Holes or gaps around your plumbing vent
  • Space left around your air conditioner or furnace vents
  • Gaps in windows or doors
  • Weep vents
  • Loose siding
  • Cracks in the foundation

Once they are in the attic, you’ll notice that mice create little “hallways” through the insulation as their method of travel. These are tunnels in the insulation that are an inch or two wide, depending on how big the mice are. Mice are small, but they can be destructive. If you suspect you have a mouse infestation, it’s best to reach out to pest removal experts right away.