Tips for Inspecting a House for Bat Entry Holes

There are several pests that people fear sharing their homes with. Rats, raccoons, and snakes are just a few of the more common animals you’ll have to contend with. However, some creatures are just as dangerous but arguably much more difficult to rid yourself of when they set up shop in your home. Of course, we are referring to the creature of the night, the bat.

These creatures love dark, quiet shelters in which they can sleep during the day, out of the glowing light from the sun. So it is likely that they will make a beeline for your attic or crawlspace if presented with the opportunity. Bats can enter an opening as small as 3/8 of an inch wide, so it’s entirely possible that they have entered even if you can’t locate where. So here are a few tips on how to inspect your home for bat entry points.

Locate Bat Droppings (Guano)

One of the most common ways to locate a bat in your home is through finding guano, the technical term for bat droppings. This excrement will likely be near the entry point the bats have used, either right at the entry point or under the wall near the entry point. If this does not help locate the entryway, be sure to check your rooftop for droppings, especially in the corners of the roof. Then if you cannot locate any droppings outdoors, be sure to go into your attic and smell the area for droppings. If you can smell an odor, it is likely the bats are there or they will likely return unless you act proactively to seal the entryway.

Exclusion Of Multiple Bats; Inspecting Bat Entry Holes

Check Walls for Stains

If you haven’t been able to find an entry point simply by observing the surrounding area of your home, then you may have more luck when looking at the walls of your home. When a bat leaves droppings or urinates from their hanging position, they will leave a yellowish or brown stain on the walls of the home. These stains are usually very visible and will often be directly above the entry point. If you believe you have located the entry point, a way to help confirm this is to look for further brown staining in this area. This comes from the bat’s skin and is another tell-tale sign of their presence.

Plan a Stakeout

If you cannot locate the entry point of the bats but you are still pretty sure about their presence, you may be able to locate their entry point through a stakeout. This would involve going out around dusk and watching your home to see if you can spot where the bats leave from. Ideally, you should have one person watching each corner of your home as this means you’ll definitely spot them if they decide to fly out.

Inspecting Bat Entry Holes

Using Lights

Another option that can reveal the bat’s entry point is through gaining access to the attic and shining a bright light. Then once you have done this, step out of your home and observe the rooftop area and surrounding structure of your home. If you see a light shining through, then this is likely how the bats have found their way inside.

Common Entry Points

Despite your best efforts, these tips will not always help you locate the bat’s entry point. However, you can actively seek entry points if you know what to look for. This will involve checking points of interest around your home and ensuring that any entry points are closed off. Here is a list of common entry points that will be often utilized by bats:

  • Roof vents
  • Gables
  • Ridge caps
  • Warped siding
  • Loose or missing bricks
  • Broken windows

Be sure to check all these possibilities to ensure that there is no means of entry for these creatures.