i had a BP get out many years ago when i was still living at home.. and my dad would go to sleep every night saying " if that snake gets in my bed "IT"S DEAD".. well about a week went by and im in the bed sleeping and i hear " hey come get your SNAKE" so i go in my dads bathroom and my BP is up on the toilet and had been drinking or about to drink.. after that i never used a tank/screen lid ever again. and i've noticed 9/10 of all escaped snakes are from an aquarium with a cheap lid that they stack books on or something thinking they wont get out..