That's basically been my experience with live predatory mites. I never really see an effect, and the bad mites continue to thrive. Maybe I don't have a bad enough mite problem? I didn't know that they required those conditions to survive, that may be my issue. I'm not entirely ready to give up trying them though. I feel like there must be some user error involved, and I just need to keep trying. Where would they even disperse to?? It's cold outside, and there's food right there!
I've gotten absolutely clobbered by mites in the past month or so, seeing the worst effects on my non-orchids, but I'm just resorting to giving them intense showers in the tub once a week. Takes forever but what else can I do? Mites have consistently been my #1 enemy when it comes to pests. Mealies? Easy peasy. Scale? No problem. But spider mites never cease to return every few months no matter what I try. I can keep them somewhat in control with Azamax and water alone, but the slightest decrease in vigilance and they're right back to their old numbers.
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