The provided text explains how beekeepers can perform the Pettis test to identify if Varroa mites have developed chemical resistance to common treatments. This diagnostic procedure requires a specific infestation level of at least six percent and involves placing bees in mason jars equipped with acaricide-treated cards. Over a twenty-four-hour period, the user monitors the mortality rate of the mites…
Breck DemersSeptember 4, 2026


