There are two restricted periods for bat exclusion in Ohio:

• From May 16th through July 31st, when 5 or more bats are present;

• From October 15th through March 31st, if any bats are present.

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During these restricted periods, bats may only be excluded by first obtaining written permission from the chief of the Division of Wildlife or their designee. Written authorization will be considered when human health and safety are at risk or when nighttime temperatures exceed 40°F for the full 10-day forecast during the October restricted dates 

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Requesting Written Permission During Restricted Periods: Before applying for bat exclusion authorization from May 16th through July 31st, the property owner or designee must:

 

• Inspect the structure for bats;

• Perform two bat watches at the structure from ½ hour before until 1 hour after sunrise or from ½ hour before until ½ hour after sunset within seven days. 

  • If five or more bats are observed during the inspection or first bat watch, additional watches are not required. Exclusion is not permitted without the Division’s authorization.

  • If four or fewer bats are present or observed, bat exclusion can be performed without the Division’s authorization.

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Please follow the link below to the ODNR website for more information and application.