As you may know, deodorant stains are a big ole pain in the butt. But getting them out of that favorite top of yours is actually fairly elementary. All you have to do to get rid of those troubled stains is soak or sponge the fabric (if it's washable; i.e. not silk) in white vinegar for 30 minutes, and then wash it in the hottest water that's safe for the fabric. Or, mix a little dish soap and equal parts ammonia and water and soak overnight, and then wash. Voilà! Your laundry will look so fresh and so clean!