Every October there's a group of 10-14 of us guys who take a 2-day canoe trip in Pennsyltuckey, and camp along the river for two nights. When we break camp each morning, there is no sight or smell that we were there, because everyone of us has learned to "bury the evidence" when the deed is done, and we "do our business" out of sight of the campsites. We cannot say the same for others who have used those campsites, and left "evidence" of their presence. We never unpack the canoes without first checking out the primitive campsites for remnants of "city folk" and their road apples.