http://www.thedailypin.net/2013/02/non-toxic-hardwater-stain-remover-super.html
Honestly, I feel like
I'm kind of cheating with this pin review. It is seriously so.
stinkin. easy! It's also dirt cheap.
But, I promised myself at the beginning of this project that I
wouldn't discriminate against pins for any reason.
And, my kitchen sink faucet was rocking some seriously disgusting
hard water stains tonight. I decided to give this pin a
try:
So all you need to do to complete this pin is slice a lemon in half
and apply one halt to whatever metal surface you're trying to
clean.
Here's my dirty faucet (no judgements, I hope!):