The first thing that comes to mind is the bright light. Bats are nocturnal animals, and they prefer to hide in shadows until the sunset. Bats are highly sensitive to various smells, and they prefer to avoid the smell of mint, eucalyptus, cinnamon. Don’t jump to conclusions, but bats also don’t like mirrors. And this is not because they are vampires, bats simply do not like light reflection and any shiny objects.