We are surrounded by germs everywhere we go. There is no escaping the hundreds of thousands of bacteria lurking behind every corner. While it's not realistic to scrub yourself down and live out the rest of your days as John Travolta in The Boy in the Plastic Bubble, you should scrub your sink, which is one of the dirtiest places in any home.
Combine lemon juice and salt until the mixture reaches the consistency of toothpaste. Apply this to brass, copper, or stainless-steel sinks and fixtures. Scrub gently, then rinse with water. This also removes rust stains.