Snakes may move away from the void in the wild, but in a small enclosure they are sure to come back to it very quickly. It's unlikely a keeper (any of us) is able to get all voids cleaned out immediately after they happens. With all the ball pythons I have, I do occassionally need to clean speared poo off a bin wall and the snake.
It is pretty likely to get voided matter on its head unless you get every single void out of the enclosure immediately.
Rick
Agree.....
Chocolate Muffin (f- normal) - 4 1/2 years old Nico N. Wilson(f - normal) - 20 years old