Cows can neither be rehabilitated nor coerced into longterm compliance in meeting basic expectations of civilization - They exist to inflict themselves upon anyone they can sniff out as a victim, and to whatever extent they convince themselves they can get away with, until they're effectively swept off the board due to a coronary event, overdose, or the avoidable outcome of having plied their trade with the wrong person. Either that, or they achieve functional exile through incarceration or hospitalization.