Have you ever noticed that there is stuff down in the vent? It seems like there is always stuff falling through the crack of the vents. How do you prevent dirt and stuff from falling through the cracks yet still allow the air to go through it? Cover the vent with pantyhose!
I took pictures as I did the project but really I didn't need to. Simply unscrew the vent an take it off, clean out the vent (I used homemade Clorox wipes - found here), cover the vent with pantyhose knee highs then screw the vent back into place. So EASY!!!