window cleaning, hard water stains

can someone tell me how i can get stains? water stains off my store front window thank you
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SOAP SCUM and HARD WATER SPOTS ON WINDOWS
What I have found that works REALLY good on soap scum and hard water stains(like on outside windows that get hit with the sprinkler water!) is "Humidifier Cleaner". I know it sounds funny. You can sometimes find it on sale at a garage sale or thrift store--get it at the cheapest place you can. All brands seem to be the same. I spray it on full strength to a small area of about 1' x 1'. Use gloves on your hands. Let it work in for just a few minutes then use some nylon netting (you can get at a fabric store for about $.57 a yard) and lightly scrub in a circular motion. Do small sections at a time so you know if you are getting the job done. Rinse it as you have areas completed. You may have to repeat this process sa couple of times. Then I put "Rain-X" on the window and that helps a lot--I only have to clean them 1/2 as much!!
Sijka

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