In my quest for environmentally friendly cleaning products I have often come across vinegar as a suggested cleanser - and have always pooh-poohed it due to its very unpleasant smell.
But I finally gave in and tried it today. Um, wow! My kitchen sink has never been so happy and shiny! The dirt willingly jumps right off and all of my hard water spots are gone (poof, magic).
I have no doubt that I can now conquer the world armed with a bottle of vinegar and an old toothbrush.
1001 Uses for Vinegar