Cypermethrin based foggers work well to get rid of mites. Not to be used on flowering plants. Should be safe to use on plants in veg which will not be put in to flower for at least 16 days after treatment due to it's half life.
Once your flowering area is empty you can treat it with a Cypermethrin based fogger to kill any remaining mites and eggs.
https://pmep.cce.cornell.edu/profiles/extoxnet/carbaryl-dicrotophos/cypermet-ext.html
I didn’t see cypermethrin on the list of approved pesticides for cannabis