During the dog days of summer, a little sweat is cool. Literally. Sweating is the body's way to regulate heat—dispersing perspiration from millions of sweat glands. It's effective, sure, but that doesn't mean this glaze of natural coolant doesn't mess up some perfectly good clothes from time to time. Depending on the amount you perspire, you could be dealing with some salty stains. Not to mention, some seemingly baked-in odors. But fear not, these items aren't ruined. They just need to be cleaned properly. Here's what the experts recommend.