Top and sides of a roof - a common bat entry point

Common Bat Entry Points

As your local bat removal specialists, Get Bats Out technicians have encountered countless homes and commercial properties with unwelcome bat guests. When starting a bat removal project, one of the first things we do is thoroughly inspect the building to find where the bats are entering the property. Knowing the most common bat entry points can help property owners understand how best to address an infestation and how to prevent one in the first place. In this blog, we will share insights on common bat entry points, identifying bat infestations, and humane exclusion techniques.

a bat removal technician on a ladder inspecting a window sill

Common Bat Entry Points

Bats are adept at finding entry points into homes, often exploiting small gaps and openings. In fact, bats can squeeze through gaps as small as ⅜ inch! Here are some of the most common bat entry points to be aware of:

  • Roof Edges: Gaps under roof edges are prime entry points for bats. Loose or damaged roof tiles can also create gaps. These areas often provide easy access to attics and crawl spaces which are dry, warm, and sheltered – perfect places for bats to roost!
  • Soffits and Fascia: Loose or damaged soffits and fascia can also provide entry points for bats. 
  • Vents: Bats can slip through vents, including those for attics, bathrooms, and dryers. Ensure all vents are properly screened to prevent entry.
  • Chimneys: Openings around chimneys, especially if the chimney lacks a proper cap, can serve as convenient entry points for bats seeking roosting spots.
  • Deteriorating Wood: Damaged or rotting wood on your property’s exterior can create gaps and holes that bats can easily enter. 
  • Windows and Doors: Bats can also enter through gaps around windows and doors, especially if screens are torn or not properly fitted. 
common bat entry points on a house

Identifying a Bat Infestation

For property owners searching for a bat entry point, knowing the signs of bat presence can help you track down the hole where they are coming in. Look for the following:

  1. Rub Marks: As bats squeeze through entry points, they leave behind greasy rub marks from the oils and dirt on their fur. These marks are typically found around small openings and can help pinpoint where bats get in.
  2. Ammonia Scent: A strong, pungent odor resembling ammonia is a telltale sign of a bat infestation. This smell comes from the accumulation of bat urine and droppings.
  3. Bat Droppings (Guano): Finding piles of guano is a clear indicator of bats. Bat droppings are typically small, dark, and crumble into fine dust. They are often found in attics, near entry points, or other secluded areas where bats roost. If you find a pile of guano on a window sill, look above to see if there is a hole. 
bat urine staining on the interior wall of a house
Bat guano stains under a vent which is a common bat entry point

Why is Bat Removal a Necessity

While bats are invaluable to our ecosystem, they bring significant health risks when roosting near humans. Bat guano can harbor harmful fungal spores that cause a respiratory disease called Histoplasmosis. Contact with bat urine can transmit bacterial diseases such as Leptospirosis. In addition, bats in the US are found each year with rabies. So, although not all bats will be sick, allowing bats to roost near your living space is not a good idea. In addition, a colony of bats in your house or commercial property can cause significant damage to your building. Their urine and guano will corrode solid building materials. The cleaning and repair work needed after a bat infestation can be extensive, so it’s best to perform bat removal and exclusion as soon as possible. Once you identify the bat entry point, what is the best way to humanely remove the bats?

bat urine forms crystals and damages wood

Humane Bat Removal Techniques

  1. Bat Valves and One-Way Doors: Installing a one-way door will allow bats to exit the property but not re-enter.
  2. Sealing Entry Points: Once your one-way door is installed at the entry/exit point, you should thoroughly seal all gaps and openings on the property.
  3. Professional Services: Calling a budget pest control guy may be tempting, but their methods may not be ethical or comply with bat protection legislation. Therefore, it is best to consult with an expert bat removal company or technician to ensure you conduct a safe removal in compliance with the laws in your state. 
A bat exclusion device on a property

Preventing Future Infestations

At Get Bats Out, it’s our mission to perform efficient and successful bat removal work, but we also want to help you prevent a call-out in the first place. So, now that you know the most common bat entry points, you can conduct regular inspections of your properties, paying attention to these areas. Examine roofs, eaves, attics, sidings, vents, and chimneys to ensure that no gaps have appeared. Where you find gaps, seal these up properly so that bats and other pests won’t enter. Conducting regular property maintenance, including repairing any rotting wood or damaged materials will help prevent gaps from appearing too. 

Addressing these common bat entry points can effectively reduce the risk of a bat infestation and maintain a bat-free home. As always, if you need help with bat removal, contact Get Bats Out today; we are ready to help!

Your Local Bat Removal Specialist,

Michael Koski

Get Bats Out Owner and President Michael Koski

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