I am really watching this guy from Crimea (former Ukraine now) because he runs small-format vertical hives.
That is my interest in his operation.
But wanted to share..
He has been experimenting successfully with artemisia oils to kill his mites.
Very efficient BUT requires some proper dosage, I understand.
Here he was doing a demo (there several of these, I understand).
I don't know the details.
Those interested should research.
For sure, another natural and working preparation if you choose to treat.