I know the question is what my mite load is. I have no idea. I don't want to risk washing the queen as I have only two hives. I treated with formic back in May, and treated again with OA for 5 times from 8/15 to 9/3. I'm still not convinced of risking the queen with alcohol washes if you're going to treat anyway, but that's another subject.
Would another round of OA help before winter? Just blindly giving another several rounds before winter as it seems rather harmless to the bees?
Would another round of OA help before winter? Just blindly giving another several rounds before winter as it seems rather harmless to the bees?