Oh, I know, I have seen the studies. I meant, we are still waiting for clinical trials to prove that they work, because so far all trials show it's just like placebo.
But if there's trials that show they don't work, then you don't need to wait for positive results. The question isn't open, the question has been answered with a "no".
Absence of evidence where you should expect evidence is evidence of absence.
There have been double blind vs placebo tests for homeopathy. It doesn't work. It's no better than a placebo.