Well, things got interesting. After I chased the bat upstairs, opened a window and spent 15 mins trying to get it to go out, I gave up and closed the door on it. Went back downstairs and there was two more flying around in my living room....Yikes! Fortunately Leo wasn't chasing after them, just lying on his bed watching them
I opened the front door and tried chasing them out, but now it's getting close to midnight and I'm tired and to be honest, getting a little freaked out. I packed up the dog and went to spend the night at a friend's.
Obviously they've found an easy access point. Going to call pest control this morning.