After a long day, your cozy couch is the perfect place to unwind, which occasionally involves stinky feet, a fatty late-night snack, or a glass of red wine. Those scents build up over time, wipes, and clogs and your couch is begging for a deep cleaning before you realize it. This method will even get rid of things you can not see, such as sloughed-off skin cells (ew!) . If you have a natural-fabric couch (such as cotton, linen, or wool) here’s how to make it look like new again.