Treatments For Varroa
The How and Why of Oxalic Vaporization: Part 2
Contents TESTING THE VARROX 2 WOULD MAINTAINING A LOWER TEMPERATURE REDUCE DEGRADATION? 6 THE LEIDENFROST EFFECT 8 SECOND-BY-SECOND OXALIC ACID OUTPUT 9 SUMMARY OF OUR FINDINGS 13 HOW MUCH FORMIC ACID IS IN THE OUTPUT? 15 SO WHAT’S THE OPTIMAL START-POINT TEMPERATURE? 20 HOW DO THE OXALIC OUTPUTS OF VARIOUS VAPORIZERS COMPARE? 22 IT’S IMPORTANT...
Residues from Oxalic Vaporization
Contents ACID RESIDUES FOLLOWING OA VAPORIZATIONS. 1 EXAMPLE OF A 1-GRAM OAV “DOSE”. 2 IS THE DOSE PROPORTIONAL TO THE RESIDUES ON THE BEES?. 4 SO HOW MUCH OA TO USE?. 6 FOR BROODLESS COLONIES. 7 FOR COLONIES WITH BROOD. 7 TAKING SOME ACTUAL MEASUREMENTS. 7 PROVAP 110. 9 INSTANTVAP. 12 VARROX. 15 CONCLUSIONS. 17...
OAV Temperature Follow-up, a Call to Action, and an Update on Thymol Blocks
Contents A CALL TO ACTION! 1 HOW IMPORTANT IS A VAPORIZER’S SETPOINT TEMPERATURE?. 3 UPDATE ON THYMOL BLOCKS. 6 CITATIONS AND NOTES. 7 OAV Temperature Follow-up, a Call to Action, and an Update on Thymol Blocks Randy Oliver ScientificBeekeeping.com First Published in ABJ February 2026 I’ve previously written about oxalic vaporizer setpoint temperatures; a...
Creating a Model for Oxalic Acid Vaporization: Part 1
Contents THE EFFECT OF OAV UPON MITES. 2 EXPECTED MITE DROP AFTER AN OA TREATMENT. 4 ADVERSE EFFECTS UPON THE BEES AND BROOD.. 6 DOSE AND EFFICACY FOR BROODLESS COLONIES. 7 OAV FOR COLONIES ENGAGED IN BROOD REARING.. 8 SO HOW MANY OAV APPLICATIONS ARE NECESSARY?. 9 SO WHAT’S THE OPTIMAL OXALIC DOSAGE FOR AN...
Creating a Model for Oxalic Acid Vaporization: Part 2
Contents DEVELOPING A MODEL. 2 THE NECESSARY PARAMETERS. 2 INPUTS BY THE USER. 3 THE QUESTION OF OA DOSAGE and EFFICACY. 4 OUTPUTS. 5 VALIDATING THE MODEL. 5 USING THE MODEL. 7 REMAINING QUESTIONS. 13 ROTATE TREATMENTS! 14 WHAT’S IN OUR TOOLBOX?. 15 WRAP-UP. 15 MY APPRECIATION TO OUR “CITIZEN SCIENTIST” BEEKEEPERS! 15 CITATIONS AND...
Testing Varroxsan: Part 1
Contents SO HOW WELL DOES IT WORK?. 2 A NOTE ON MITE REDUCTION VS. EFFICACY OF TREATMENT 2 THEIR CONCLUSIONS. 2 MY OWN ANALYSIS OF THEIR RESULTS. 3 THEIR CONCLUSIONS. 4 MY ANALYSIS OF THEIR RESULTS. 4 WE DON’T NEED NO STINKIN’ SCIENTISTS! 4 TIPS FOR RUNNING A FIELD TRIAL. 4 TWO FIELD TRIALS FROM...
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