Well after 6 years of living in Austin, my glasses are really starting to show the stains from our hard water.
So it’s time I introduced them to my friend vinegar: 
Oh yeah, Pickle Perfect.
So let’s go for a quick 30 minute soak in a bath of vinegar. 
Now you just get to go about your business while that works away.
Then come back and give them a little bit of a scrub – you want to make sure those stains know that you are the boss.
And voilà! Brilliant, sparkling clean glasses again 
See the before and after below.
–Martta
Great tip. My mum used to use vinegar and newspaper to clean the windows and I still boil vinegar in my vegetable steamer to clean the hard water damage. Works a treat but kitchen smells of a fish and chip shop for a while afterwards though!
Definitely gonna try this!