Lasi did extensive tests and found that higher doses of OA still had no negative effects on the bees.
Yes, The VMD regulations in the UK for approved Oxalic Acid formulations sold permit a single application per year by sublimation. Professor Ratnieks of LASI has stated through that: “The research we have done shows that single and double applications of oxalic acid, 2.25g, by sublimation in broodless hives cause no harm to bees or colonies.” I would add that Ratnieks also recommends two treatments by sublimation 7 – 10 days apart (source personal email to myself).
Interestingly, Other respected scientists in this field say more treatments at shorter intervals to maximise impact over the brood cycle of bees, noting of course when you do your treatment, the method used and the changes to our climate that risks no brood break is the most effective.
Do you have any links to research on this or presentations would love to see.
do you mean this one on Aluen cap strips
