This text chronicles the history and management of Varroa mites within Ontario’s beekeeping industry since their initial discovery in 1991. The author outlines a cycle of chemical resistance, noting how early synthetic treatments like Apistan and Checkmite+ lost efficacy over time. To combat this, the industry has transitioned toward a diversified rotation strategy that incorporates synthetic strips alongside organic acids…
Breck DemersFebruary 26, 2026