I shouldn’t be able to see broad mites without magnification, anyone know if that’s true?
Upon further inspection, and calling the local Entomologist, broad mites is a better guess. You can still use M-Pede but efficacy will drop significantly if they are in the adult stage. Depending on your growing style finding a light duty arachnacide shouldnt be to hard. I believe
Avid is publicly available. If you have a licence (probably not) you can try and find a commercial miticide however I would check local guidelines if you are going to apply it to a plant in the ground. Otherwise you can always try and find a guy with a licence and see if they will help you out, time is a factor so this is not a very practical solution.
One last ditch effort I can think of, and I'm not sure of the availability, is predatory mites. They can be purchaced from specialized labs. I do not have any leads on those. If the plants are outside then predatory IPM is very inefficient.
@RealizedReal000 I think this applies to your thread as well