Non-lethal traps like what he's proposing are legal and surprisingly commonplace. A ton of banks have dye packs hidden inside wads of cash that explode after a

Non-lethal traps like what he's proposing are legal and surprisingly commonplace. A ton of banks have dye packs hidden inside wads of cash that explode after a bank robber makes off with the money. There's also anti-vandal paint that coats the hands of anyone trying to climb it with a slippery greasy paint. Even the popular myth that a fire alarm pull station will stain your hands with ink is based on an actual product. High schools with a string of false alarms will sometimes put a marking compound on the handle that is indelible and changes to a bright color when someone tries to wash it off their hands. Spraying a thief with fart spray and glitter is not illegal.