While rubbing alcohol is a great option, soap is better. Soap is specifically designed to break down the outer membrane of bacteria and viruses. The vigorous action required to work up a lather creates the friction that’s needed to lift grime and microbes off your skin so the running water can wash them away. If you don’t have access to soap and running water, or if using soap and water would be impractical in a particular situation, then rubbing alcohol is a great backup choice.;