How do you wash a baseball cap with out a dishwasher?
You can try putting the cap in the washing machine. Put it on a VERY gentle cycle, and only for a little while. If there are stains, apply some stain remover to those areas before washing to help get it clean faster. Otherwise, try washing it by hand in the sink. Use soap for clothes and a bristle brush to scrub. This can also be done outside in a large bucket or under the hose if the weather isn’t too bad. Be careful placing the cap in the dryer, though. The fabric or materials in the cap may not do so well. Let it air dry, or if it is sunny, place it in a warm, sunny spot for a few hours to dry.