If the snake defecates in it, the bowl must be cleaned and disinfected immediately. They tend to pick a direction and go for it. Though they are relatively small in body mass, they are quite strong. Always support the body and give free rein to the head. If the head starts going somewhere you don't want it to go, gently guide it into another direction.
Many snakes are nervous when introduced into a new situation with new people.
Give them a couple of days to settle down before letting new people handle them. A new skin awaits just below the old. As a snake gets ready to shed, its eyes will turn a milky blue over the course of several days, and the body color will start to dull and develop a whitish sheen. Once the eyes have cleared, the snake is ready to shed. Many of the parasites, bacteria and protozoans can be transmitted to humans and other reptiles.