VarroxSanInstructions for use: Refer to the product label for definitive instructions. Four strips are used per 10 brood frames (one strip for every 2. 5 frames of bees in the brood nest). Fold each strip in half and drape over a brood frame. Remove after 42 to 56 days of treatment. VarroxSan is best applied in summer or autumn, outside the period of honey flow. There is no temperature restriction, but VarroxSan acts by contact, so is most effective when the