Lemons might be sour, but the number of ways they can help you around the house is pretty sweet. Here's a lengthy collection of 55 uses for lemons that covers everything from improving your appearance to treating sore throats to helping you out with spring cleaning.
I can add one more to the list. One of my favorite household lemon uses is to remove stains in old plastic food containers (mine were all tomato sauce-colored before I learned this trick). Just cut the fruit in half and use it to scrub out stained plastic.
If any of you Flossers have cool secret uses for lemons, be sure to share them in the comments!