I'm going to attempt this tomorrow. I bought a bottle of CLR, I'm thinkin it should should work. I've seen commercials where they swish it in the coffee pot and it restores it. I will try to post a pic of the fog light that has the stain. I don't want to try anything and ruin the fog because it's almost impossible to find a replacement. Is there a type of cleaner that will get rid of the brownish stain on the chrome in the foglight without stripping the chrome?