GREENSBORO, N.C. — You might have seen life hacks online that say you can clean off your headlights with bug spray or toothpaste. But do they actually work? We did the experiment for you. We used OFF!

You clean your car’s windows to help you see more clearly and keep your car in tip-top shape. But, what about the headlights? Keeping the headlights clean is an important car maintenance task. If your ...