I may have bats in my attic. While cleaning the vinyl siding and when the water hit the end vent a bat came flying out, don't know if it was just up in louvers of the vent or somehow the vent screen has come off. Don't want to open the attic door and get hit by a bunch of bats. Is there something that can done the easy way to get rid of them. Was up there about 4 weeks ago and didn't encounter any.