Bats will burrow behind the insulation to live in the walls of the home.
Do bats burrow in attic insulation.
Do bats burrow in attic insulation.
Flattening of the insulation from a heavy raccoon is expected as they move from one end of the attic to the other.
Bats often hibernate under insulation to get near warmth from a wall or ceiling.
That last opening gets a one way door that will allow the bats out but not in.
Even though the bats are entering into the attic area does not mean they will be visibly hanging out.
They will then find a new place to live.
I would strongly suggest that you contact an expert to help you evict your little tenants.
Bats are very small mammals often weighing only a few ounces and will damage insulation in several ways.
The problem is bats do the same thing.
They rarely hang from the ceiling in an attic during the winter because it is too cold.
What the expert will likely do is find out where the bats are going in and out of your attic and seal all the openings except one.
The only way to get rid of the bats safely and humanely is to call professional bat removal experts.
The further they work down the closer they get to the location a mouse would be.
Bats will burrow behind insulation and enter wall cavities.
Bats have sharp teeth but typically will not chew through dry wall.
We assume bats will just be roosting from the rafters when we peek up in our attic.