You have a healthy attitude toward hygiene. Your mom taught you well and gave you a good command of the basics -- wash your hands before dinner, brush your teeth and floss before bed, weed out the mystery meats from your fridge every so often. Still, everyone has blind spots, and it's good to educate yourself in the basics of germ warfare. Believe it or not, experts say that kitchen sinks and countertops are some of the nastiest surfaces in the house -- even worse than the toilet bowl! And one of the best ways to catch a cold is to touch a doorknob during flu season. The public toilet seat: not nearly as bad as the bathroom door. Knowing where and how germs spread will help you keep a good grip on the areas where you need to be vigilant, as well as the places where you can slack off.

You have a healthy attitude toward hygiene. Your mom taught you well and gave you a good command of the basics -- wash your hands before dinner, brush your teeth and floss before bed, weed out the mystery meats from your fridge every so often. Still, everyone has blind spots, and it's good to educate yourself in the basics of germ warfare. Believe it or not, experts say that kitchen sinks and countertops are some of the nastiest surfaces in the house -- even worse than the toilet bowl! And one of the best ways to catch a cold is to touch a doorknob during flu season. The public toilet seat: not nearly as bad as the bathroom door. Knowing where and how germs spread will help you keep a good grip on the areas where you need to be vigilant, as well as the places where you can slack off.