What Should You Expect During The Bat Exclusion?


Starting the first evening after we begin the work, there is an increased risk of bats entering your home. While we do install excluders (one-way doors), our work has changed the air flow and smell of the normal way out for the colony of bats.  Sometimes they will decide to look for another way out and can end up in your living space.


This risk is the greatest for the first couple nights after the excluders are installed, and for this reason some of our clients find somewhere to stay for a few nights.  Others are comfortable closing their bedroom doors and perhaps putting a towel down so that nothing can crawl under the door.  After five days or so (depending on species) bats will die of thirst and the risk of getting them inside for this reason ends.  Because bats can smell water, homeowners will sometimes find them trapped in toilets, sinks or bathtubs.


bat attached to bricks on the outside of a house

In the first couple weeks after an exclusion, it is common to see bats on the outside of the house.  This is an excellent sign they were successfully excluded and can’t figure out how to get back into their roost.  Because they are vulnerable to predators during the day, they may squeeze into cracks in logs, behind shutters, or behind gutters.


These temporary hiding places are typically too small and exposed for the birthing of pups, so eventually the bats will move on to another location.  Spraying them with a (low pressure) garden hose may encourage them to leave sooner.

bat on brick wall on the outside of a house

What Should You Expect After The Bat Exclusion?


Bats have a very strong instinct to return to the roost where they were born.  If you had bats for many years, they may spend years trying to get back in.  Bats will exploit open doors and windows that are not properly screened.  They will also find any damage or openings in the home caused by weather, remodels, or other nuisance wildlife.


There are two times during the year this activity will be very minimal.  This includes the wintertime when bats hibernate and the time, they are tending pups in their new roost who are still flightless.


bat exclusion on a steep metal roof

For many of our clients, our service is “one and done”.  Hopefully this will be your experience.  However, when the bat problem is complex, our relationship with you may be ongoing for numerous years.  We pride ourselves on standing behind our work and partnering with our clients.  Factors that add complexity to a project can include any of the following (or more):

  • Size of the colony
  • Length of time bats lived there
  • Condition, size, and construction of your home
  • Severity of your winters

If you have any questions during or after your exclusion, please call our knowledgable customer service department at (877)264-2287.

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