Not how I want to wake up in the morning

There was bat excrement all over my floor when I came home yesterday. I figured it was just bc my door was open and they flew in the dark and enjoyed it while I was gone. Nope, turns out I made a very smart move when I first got to my house 2 years ago-- closing up the holes. There is space between the walls and ceilings that connect me and the unoccupied room next door. This is where bats are flying in. I never had a problem in two years except now bc the coverings have fallen down. Now, I have to find a guy to put them back up. I thought me being back would stop the bats but no, this morning more bat shit all over my floor. F.