I volunteer in wildlife rehab. The one way screen is the way to do it, and once you have that set up, I'd then put out a couple of bat boxes on places not near the house. That way they'll still have a home but not be too near.
The only problem is that if you have nursing mothers, as you most likely do this time of year, it's illegal to do it right now since you'd be killing all the babies. So you need to wait until a bit later this summer and then the one-way door should do the trick very easily. When in doubt, look up "wildlife rehab" and your city or county and give a call - I'm sure there's one not too far. Or at least within your state. They can give you more specific details and help you plan. They're also the ones to go to if one is in the house or you find an injured one.
Early intervention specialist and parent consultant since 2002.