The first clue was the smell. The second clue was the tiny footprints of dog poo leading to a seated child. Since the room was filled with small children from the neighborhood, I made a mass request. “Someone has dog poo on their shoes. Please take yucky shoes out front and hose them clean.” All but one child inspected their shoes. A chorus of “not me” bounced around the room. I addressed the lone silent child. “Did you check your shoes?” “I don’t need to cause I already wiped all the poo off on the floor.”