It's based on the same scientific principle, but Cimexa is man-made and much more potent.    When my apartment caught a small infestation, I threw out my box spring (where they were nesting), ran my clothes through the dryer a few times, and dusted that Cimexa stuff absolutely everywhere.  I was constantly freaking out for months at random itches when I was in bed thinking they'd came back, because it's what the internet conditioned me to expect, but I never found another one ever again.