I'm more interested in no longer spreading the mite gene(s) for pesticide immunity across the country.
The resistance genes are not spreading due to physical transport, they’re spreading because of evolutionary selection.
Regardless, I think we both agree that the extremely unnatural pressures of industrial agriculture are a root cause here.
For example, Scandinavian countries that have made a concerted effort to only prescribe antibiotics to humans when they are medically necessary saw the genes for antibiotic resistance becoming less prevalent.
Unfortunately, America still allows agribusiness to feed livestock a constant stream of lower dose antibiotics, because doing so makes animals more efficient at turning feed into muscle.
https://www.greenlightbiosciences.com/in-the-pipeline-protec...
Probably the better solution here is to stop trying to do industrial farming of bees, and move to a system where local populations of pollinators are cultivated and maintained year round. But sure, RNAi is probably better than the chemicals they're using now.
Consider Amitraz [1]. It is both an insecticide and a miticide, and the method of action is on the central nervous system. Fluvalinate [2], another common one, is also broadly toxic to many different organisms.
I doubt that there's any hope at all of controlling mites in free-roaming honeybees. I'd wager that we've done damage with overuse of miticides (which are insecticides, btw -- the article doesn't connect those dots) in a misguided attempt to control nature.