Formic Pro Strips are used for the treatment of Varroa mites. They are perfect for hobbyist beekeepers with 1-25 hives! These new improved strips are a Formic Acid polysaccharide gel strip that has a longer shelf life than the previous MAQS (Mite Away Quick Strips). When placed in the heart of the honeybee hive, it kills the Varroa mite where it reproduces, under the brood cap. Formic Acid is organically certified and eliminates residue risk, allowing beekeepers to use it safely during honey flow.