For all of us with slightly older vehicles and/or ones that we put to the test of the elements on a regular basis, this is invaluable. I'm all about life hacks and this is one of the best and easiest. If you have foggy/dirty/dingy headlights, don't fork out $40 - $150 to buy new ones. Grab a sock and some bug spray and get to wiping. There are several videos on YouTube proving how well this works, and this one by Haks of Life is going crazy all over Facebook. The guy demonstrating how it works claims an old science teacher working at an O'Really Auto Parts shared this secret with him. The secret's out now and we're ALL thankful.