I feel like a lot of the wash you hands messages are geared to children. And I get it: Teach the people who can most easily develop lifetime habits. And maybe they can teach their parents things.
That’s good, but for adults: Wash your fucking hands. Are you near a sink? Wash them now. Are you somewhere that you can’t wash your hands? Make a plan for the next time you can wash your hands, and then go do it. Also, to men and other users of the men’s room specifically, wash your hands after using the urinal. Even if you hadn’t literally just touched your penis, it’s still a good idea.