don't think of it as "escaping". I love these guys to death but I think that gives them a huge intellectual benefit of the doubt. It's in their nature to ROAM or "explore". Roaming instincts help them find food, housing and find security in an otherwise vicious environment.
IF in the process of roaming around your cage at night or day, they happen upon a small crack or opening- well, see ya later.
unless the tank says- made for snakes, from the factory then it's not escape proof. And even then, tops accidently don't get slid on all the way or we turn our heads for too long.
Houdini couldn't shake a stick at these little escape artists ;-)