I just found something so awesome that I had to share it!
Bar Keepers Friend (the cleaner) and a scratchy pad gets hard (HARD) water off windows!
(Back story)... I have
REALLY hard water!!!! When we moved in, the basement windows of our home were so caked with hard water that you don't even need blinds. (No, seriously. I don't). I have tried just about
everything that anyone could suggest. It has been really frustrating!
I was giving it another shot this spring cleaning season. I had done even more research and was giving it more elbow grease than I knew was humanly possible... that's when I got the inspiration! My sister had just introduced me to a cleaner called "The Barkeeper's Friend." (Fabulous for bathrooms and kitchens by the way). I tried it on a little section of the window to see if it would scratch it.... Oh man! It worked AMAZING! The basement windows are taking a lot more scrubbing than the windows that the sprinkler only hits now and then... but this stuff is awesome! I actually thought we were going to have to replace those windows because of the hard water. I have been dancing around since I cleaned them... every time I see my windows. (As you can see, I'm a little excited about this! La-la-la... clean windows... La-la-la! Oh, and singing too).
DISCLAIMER: I am not a professional window cleaner and therefore you can not hold me responsible if this product damages your windows... It didn't seem to scratch mine... but you're on your own with yours.