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How to Identify Entry Points Bats Use in Your Home's Structure

Published February 6th, 2025 by My Wildlife Service

General

Finding bat entry points early can prevent serious problems in Michigan homes. Bats need only a small opening to access your house, and knowing where to look helps spot these access points before a colony moves in.

Common Entry Locations

Bats typically enter homes through specific areas where building materials meet or where age has created gaps. The most frequent entry spots include roof edges, chimney connections, and areas around vents. These locations often develop small openings that bats can use to access your home's interior spaces.

Signs of Bat Entry Points

  • Brown stains: Dark marks around holes from bat oils
  • Guano traces: Small black droppings near openings
  • Scratch marks: Visible marks around entry holes
  • Squeaking sounds: Noises near potential entrances

Where to Check First

Start your inspection at these key areas:

  • Roof joints: Where different roof sections meet
  • Soffit connections: Gaps between roof and walls
  • Vent openings: Damaged or loose vent covers
  • Chimney flashing: Separated or loose materials

Measuring Entry Points

Bats can squeeze through incredibly small spaces. A gap as tiny as 3/8 inch wide provides enough room for a bat to enter. Check all suspicious openings with proper measuring tools. Remember that multiple small gaps often indicate a larger problem requiring professional inspection.

Seasonal Changes

Michigan's weather affects your home's structure throughout the year. Summer heat expands materials while winter cold causes contraction. These changes can create new openings or widen existing gaps. Regular checks during season changes help catch new entry points early.

Professional Inspection Benefits

  • Complete assessment: Finding hidden access points
  • Proper documentation: Recording all potential entries
  • Expert solutions: Correct sealing methods
  • Prevention planning: Long-term protection strategies

For professional bat entry point inspection in Southern Michigan, contact Ancon Wildlife Services at 248-930-1882. Our animal removal team provides thorough inspections and effective sealing solutions to keep bats out of your home.

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Testimonials

  • After calling and hiring a competitor company, which failed miserably at solving my squirrel problem, I found Ancon Wildlife Services. Dave came out and performed an inspection of my home and informed me that the solution to my problem would be accomplished through a process known as exclusion. The other company only offered trapping services and didn't seem as knowledgeable. Dave informed me that a good portion of Ancon's customers have had a similar experience with other animal control companies. from start to finish I felt good about doing business with Ancon. I highly reccomend their service and I wish I would have called them first.

  • Mike was awesome! my experience should have been filmed and put on T.V.! Seriously. We were hearing chirping noises in our fire place and called Ancon. Mike climbed up on the roof and some how motivated the raccoon to the top. He then wrestled the critter out of the chimney with a pole of some sort and put it in cage. WOW! He wasnt done yet...he went back in the living room and removed the baby raccoons from the fireplace put them in cage and informed me that he would relocate the family all together. Fearless and caring, these guys are incredible! He then installed an animal proof chimney cap to prevent any future animal problems. Top notch service and excitement to boot.