Stand outside with a camera and take pictures as evidence to excommunicate any patrons.
Set up a large camera with a telephoto lens on the grounds of the convent which will photograph all patrons of the strip club as the are admitted. Then post the photos on the internet for wives and children to see.
Well they could also take pictures of the license plate, look up who owns the car, then visit the house and witness to whoever shows up to answer the door. Be it mom, dad, wife, girlfriend, etc.