Karleen Kos is executive director of the Portable Sanitation Association International. She may be reached at karleenk@psai.org or 952-854-8300.
Sometimes it’s hard to tell the difference between things that seem very alike. If you are a Harry Potter fan, you know that even Mrs. Weasley had trouble sorting out Fred and George. If you are older, you might recall the challenges — at least from a distance — of separating the...
