How can I remove hard water stains on my windows?
My windows have what I think are hard water stains along the bottom edge (exterior side only). The fogginess cannot be removed by a simple washing and squeegee.
I suppose something acidic might remove them if they are indeed hard water stains. But I don’t want to use anything that might etch the windows or damage the paint on the walls. So, how can I get clean and clear windows again?
This question is in the General Section. Responses must be helpful and on-topic.