How do I remove hard water spots on vehicle windows, that have been driven and exposed to all sorts of elements? Besides hard water stains, there are other unknown spots. Thank you.
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There have been a lot of great answers for how to clean shower glass, but I'm concerned about how some of these suggested cleaning agents will react with rubber and auto paint. So I want to ask what people have found effective and safe for getting rid of hard water stains on auto glass.
The windows on my car are embedded with some type of film, they are like water stains. They will not come clean. Vinegar did not work. Any suggestions?