Far more likly it's a mouse, rat, squirrel, or ****.
Bats would be outside at night not inside.
Have you been under the house and looked for ways in? Any place plumbing or wiring was run through the bottom plates needs to seal with expanding foam anyway so take some with you.
Bats would be outside at night not inside.
Have you been under the house and looked for ways in? Any place plumbing or wiring was run through the bottom plates needs to seal with expanding foam anyway so take some with you.