What is an effective method for helping bats exit without re-entering?

Providing a funnel is an effective method for helping bats exit without re-entering because it allows for a controlled pathway for the bats to leave their roosting area. The funnel is designed to guide the bats outward while preventing them from finding their way back inside. This method exploits the natural flying behavior of bats, ensuring that once they exit through the funnel, they are less likely to return.

Bright lights, while sometimes used in pest control, can cause confusion or stress to bats and don't provide a physical barrier to prevent re-entry. Similarly, sound deterrents may disturb bats or not effectively guide them out. Installing catapults is impractical and not a humane or effective solution for managing bat exit. Using a funnel simplifies the exit process and is considered a more responsible and effective approach.