Sometimes legit massage places (who google "massage" and find themselves on page ten) complain about these places. Pissed off wives and do-gooders call. Or if someone calls and makes a point to follow up, it may spur an investigation. Make no mistake, LE knows every place and everything that goes on inside. Many are customers. Any spa could be busted on any day. It is simply not a high priority, until someone makes it so. "Trafficking" is the current hot button phrase to justify the time, expense and manpower. Busting a middle-aged Asian woman for giving a guy a handy, doesn't get the public backing that it used to.