Block off Soi's 2 thru 7 on Sukumvit, with the Army, raid every guesthouse, apartment residence and arrest every foreigner living there. Make them show proper identification, passport visa, work permit, unable to do that, confiscate every cell phone and computer for forensics. The only way to slow this down - notice I did not say eliminate - is to put on the steel gloves and come out swinging anyone found not guilty?? Apology from Police and let 'em go, otherwise, the rest go into the clink............Just Saying