Fall Is Prime Bat Exclusion Season
Once the maternity season closes on August 14, exclusion work is legal all the way through April 15, and fall is one of the best stretches to get it done before winter and next year’s maternity season.
Why timing matters
Exclusion devices have to be left up a minimum of four consecutive nights with overnight lows forecast at 50°F or above (FWC rule). Fall in Northeast Florida usually offers a good stretch of nights that meet that temperature requirement before winter cold snaps make scheduling harder.
What the process actually looks like
We identify every active entry and exit point, install one-way exclusion devices that let bats leave but not return, confirm the colony is fully out, then seal the roost permanently and address any guano cleanup needed.
Booking ahead
Because exclusion has to happen within the legal window and needs the right weather, waiting until spring means competing with everyone else trying to finish before the next maternity season closes on April 16.
Regulatory note
Florida’s bat maternity season runs April 16 through August 14 each year. Under Florida Administrative Code 68A-9.010, it is illegal to exclude or evict bats from a structure during that window. Legal exclusion using one-way devices can only happen August 15 through April 15, and devices must stay up at least 4 consecutive nights with overnight lows forecast at 50°F or above. Source: Florida Fish and Wildlife Conservation Commission. Rules can change; call FWC or check myfwc.com for the current version before relying on this for a specific situation.