Yep - My wife can point out the meth dealers in the village (and the tambon), tell you where they live, who is dealing, and who is supplying them (see zepplin's comment). 🙄 It's a nice cosy little world.
She did get a twenty-something year old monk busted for meth. The young monk was the sole caretaker of the village temple as the official abbot was often in Bangkok and was due to be replaced with a new abbot. During that time the kid spent most of his days with the yaba crowd hanging out at the temple and installing stereo systems into cars. My wife bypassed the local amphur cops and went to a narcotics cop she knew in Chiang Mai. Chiang Mai narcs contacted the amphur cops and showed up to do a surprise pee-test on the monk. Caught him with meth in his possession as well. Lucky for him he escaped going to jail. A local shop owner took him in as an employee and the got off with pretty much a hand-slap and parole. Which is fine imho. Yaba users need treatment, not prison. Wife is not interested in the rest of the yaba dealer network. She only cared about a yaba-taking monk being in charge of the village temple. She is a solid Buddhist if a monk is disrespecting Buddhism - look out. We now have a older monk who is doing a great job renovating the temple grounds, and I believe he will eventually become the abbot - he's a stand-up guy.