Mite Matters

Your mites are alive. Your thrips are also alive. That combination has eleven documented causes, and what the mites are doing — where they are, what they are sitting next to — narrows it to one or two in about five minutes.

Almost every "the mites didn't work" story traces back to one of nine causes, and most of them were decided before the bottle was opened. Here's each failure mode, the mechanism behind it, and the fingerprint that tells them apart.