Except if the room has a tilted open window. It comes in through the window, but never discovers how to escape anymore from it since it keeps trying to fly towa

Except if the room has a tilted open window. It comes in through the window, but never discovers how to escape anymore from it since it keeps trying to fly towards the outside light through the glass rather than going up a bit and flying through the actual open gap. At least that's my experience, and of course that's quite annoying behavior when you'd rather have it go outside the house! But maybe I should try this "bat signal" next time :)