One of the most important aspects of a clean bathroom is proper ventilation. A fan is ideal -- not only does it help get rid of bathroom smells more quickly, the ventilation helps prevent the growth of mildew and mold, too. Not all bathrooms have fans, but there are other things you can do. If you have a window, pop it open right after a shower to let the steam escape. No window? Leave the door open while you shower. Want to do more to prevent mold? Be sure to wipe up any standing water and give your walls a quick towel down.