Just your thoughts? Have you actually sprayed your plants liberally with alcohol every day or two for more than a week consecutively?

NEVER spray plants with rubbing alcohol to the point of runoff, and CERTAINLY don't do it repeatedly. That will not only kill the mites, but it will remove the protective waxy layer that the plants have on their leaves to protect themselves from water loss. You will also leach nutrients out of the leaf. The plant is more likely to die of this suggested treatment than of a minor mite infestation. I just visited a client who had KILLED his garden with alcohol sprays just because he had white flies, which are not really even a threat to plants! I was like, OMG... Needless to say he is starting from scratch now. The few remaining live plants were so badly damaged they were not salvageable.
Correct mite treatments include light mists of neem or coriander oil, room bombs, no-pest strips, or systemic pesticides. Also try a natural Pyrethrin spray like 'vegetable insect spray' products. Check that the active ingredient is pyrethrin and it contains no piperonyl butoxide if you are using it in flower.