Reviewed notes and corrections
Harbo’s study used caged adult bees at 40°C, with food, water and oil-coated boards that trapped fallen mites. Its 97.4% at 24 hours and 100% at 48 hours are mite-removal results; they do not establish that heat alone killed every mite. Cage size, comb and humidity changed the outcome. These results are not a validated whole-hive 106°F protocol.
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VarroaDestructor.com · Reviewed October 14, 2026
