Every time you walk down the hall, you’ll hear it. On the worst days, when you’re really in tune to it, you’ll stand right on top of it bouncing up and down wondering just what to do. At night, when the house is asleep, you find ways to walk around it. But every day, you hear the tell-tale squeak of your subfloor; reminding you that there is a problem and you need to fix it. But how?