In the film, Mike's sole ambition is to become a professional Scarer a monster employed to capture "scream energy" by frightening children in their beds at night.
Some research groups are investigating ways to keep bats away from wind farms, and a University of Aberdeen group recently suggested radar emissions might act as a "bat-scarer".
In fact, the most effective horror writing turns not on the scarer but the scaree: The personal motivations of the character going down into a dark cellar makes a scene frightening and involving, not what he ends up seeing or perhaps being devoured by at the bottom of the stairs.