You may be asking, "Why am I seeing this picture of a child with diarrhea, and what does this have to do with the AT?"
Well, diarrhea is a common occurrence in wilderness travel. Related to the AT, 45% of AT hikers experience this sloppy call of nature.
The Wilderness and Environmental Medicine Journal published a study on how to effectively wash your dishes while in the wilderness to prevent the spread of bacteria. I'm sure to many hikers this system seems very much impractical, however it just very well may be worth the extra effort.
You can read the study at www.allenpress.com
That image is poster material.