The green light neem has some kind of surfactant in it, pretty sure. Don't really need the soap. I think even safer brand insecticidal soap is pretty rough on leaves, so I always leave them in the dark an hour or so, then respray with water to rinse. As far as mixing the pyrethrin, soaps and neem against the 'borg', I think it's better to rotate through them, so the little mutants don't get a chance to evolve around the whole cocktail at once!
One trick that helps to prevent transpiration blocking is just to spray the undersides of the leaves. This only works when the mite population is still small enough that they prefer that area to the tops. If you keep battling them on the undersides, they'll just keep trying to repopulate that area rather than spreading to the rest of the plant.
One trick that helps to prevent transpiration blocking is just to spray the undersides of the leaves. This only works when the mite population is still small enough that they prefer that area to the tops. If you keep battling them on the undersides, they'll just keep trying to repopulate that area rather than spreading to the rest of the plant.