Tips on cleaning/getting rid of "hard water stains" in bathrooms?
I'll be moving into a house in the middle of this month. The main bathroom tub /toilet area has lots of hard water stains. In the master bathroom, the sink is horrible. The owner left the water running in the sink and there is a huge black/dark brown hard water stain.
What great tips can you give me to help me get rid of the stains and how to keep them off in the future?