Oxalic Acid Talk
Which varroa mite treatment actually works? We compare every legal option in the US with efficacy numbers from peer-reviewed trials, temperature limits, honey-super rules and cost, and explain why oxalic acid vaporization has become the go-to for most beekeepers.
Treating Bees With Honey Supers On: What the Label Allows and What the Residue Data Says
Yes, some varroa treatments are labelled for use with honey supers on, and oxalic acid is one of them. Whether you should is a different question. What the labels say, what the residue studies measured, why a mid-flow treatment reaches fewer mites, and what to actually do when the wash comes back high in June.