From what I can figure it is because we have had a ton of
guests recently staying there because I am on bedrest. They are all
guests they are fond of, no strangers. Whenever the guests leave, so does the poop. If it was as simple as locking the door at all times, I would do that but the moving into my son's room is unacceptable. There are no new pets, new environments, new food and the new baby isn't here yet. The remaining two are free of medical conditions.