How can clerks and sales people protect themselves when they are less than 6 ft. away from the public in an 8 hr stretch?

Universal protection: medical workers also work less than 6 ft from the public, and the way they protect themselves is to consistently wear a tight fitting mask over their nose and mouth, wear gloves/ eye protection and vigilantly avoid touching their mask, or face. if you take a break, remove mask/gloves carefully and immediately wash your hands.