Water doesn't stain. It's minerals and other stuff in the water that causes stains. If you would like to tell us what has been stained we can offer advice.
Every time I clean my mirrors, they end up having tons of streaks and almost look worse than before I started. What could I use to clean them that won't leave streaks...
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How do I find the smell of mold/mildew on my lanai...I have checked everywhere possible...don't smell it until it rains..live in FL..soon as I open the screen door to...
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try tooth paste
Water doesn't stain. It's minerals and other stuff in the water that causes stains. If you would like to tell us what has been stained we can offer advice.
Don't know sorry
What are the stains on? We really would like to help you.
If it's a wall or ceiling, try Kilz. (But get the leak fixed first.)