Fixed rattling screen door that has been an irritant for a long time. Whenever we shut the door/screen door it would have this darn rattle. While at FOT David Flanigan showed me how to fix it, so if yours does this, here is what you can do.
The metal grids on the screen door were our rattle source. By tapping each point where the grid attaches to the frame you can tell where it's loose. Squirt a dab of clear silicone into the loose ones. Both grids on our door needed attention. The door now has a nice solid sound when closed. ;D