My son told me last weekend that he cleaned all the dull haze off his headlights with Backwoods Off insect repalent! I was in Acadamy today and bought some. I just came in from doing all my headlights and tail lights, man what a job it did, clear as new. He said it should last 6 months. In the past I have rubbed them with toothpaste and compound and the commercial cleaner and never did get clear, this is just wipe on with a paper towel and it done!