For mites I like to spray my infested plants with horticultural oil
(commercial diluted per label or mix a cup of vegetable oil with a few
tablespoons of dishwashing liquid and dilute this mixture 1:20)
alternating with a mild soap solution (something like Lux Flakes 2
tbsp./L water) every 3-5 days for 2-3 weeks. Spray in early evening or
very early morning and try your best to saturate the leaves including
the undersides. Rinse plants vigorously midway between sprayings.
another approach could be to go out and find a
functioning ecosystem with other mites (some which
are predatory upon other mites) and perhaps that
can restore the area to some kind of balance? could
also spend some time learning about mites and what
it takes to keep a wider and diverse population of
them happy and thriving.
i decided some years ago that spraying various
things around may help for some applications but
they may also cause more other unintended effects.
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