You’ve invested in a nice bike, and sure, you take it into the shop for regular repairs and maintenance. But are you properly cleaning it after each use to help keep it running smoothly? A swipe of a towel or the spritz of a hose is a decent start, but that’s not all you should do at home to keep the dirt, grime, and rust away. I asked Wayne Smith, a mechanic at Olympic Bike Shop, near my home in Tahoe City, California, for some tips. “My rule of thumb: a clean bike is a happy bike,” he says.