Fix for Rattling Doors: Bend the Strike Plate Tang - Many door strike plates have an adjustable tab or tang. Some of these tangs can be adjusted in place with a flathead screwdriver. Others need to be removed and adjusted with pliers or an adjustable wrench. The more you bend the tang toward the door, the farther the door has to travel before latching shut.
Fix It Yourself and Save|Six projects you can do around the house for a fraction of the cost of a pro. Remember fixing screens as a kid with my dad! Totally forgot about that... need to do this to the screen door!