sounds like Christmas Vacation movie! we've had bats inour house twice and a couple of springs ago a mama racoon climbed in our chimney and gave birth to 4 babies on the inside ledge! we have a triple flu chimney so my DH blocked off the other 2 and proceeded to make life uncomfortable for her-hoping she would think it was not a safe place for her babies. Imagine my glee when i came downstairs to find him BARKING up the fireplace!!!HE he!I"m giggling right now thinking about it! Next he tried an emergency siren that he got from work-oh wow> but all it did was tick her off. She chewed up my yardstick when he tried to poke her. She finally left and went off chasing another racoon that climbed up the ladder. DH blocked off that flu and used tongs to lift out the babies. we put them on the porch in a warm box and the next morning they were gone. Needless to say, we now have chimey caps!