Continuing on with their review of techniques to control Varroa Mite - the ATTTA (Atlantic Tech Transfer Team for Apiculture) looks at the Liebig - Dispenser. The Liebig-Dispenser is a device which facilitates the release of formic acid. Formic acid is an organic acid treatment used against Varroa mites. It is a liquid which evaporates into the hive and kills phoretic and developing mites. The Liebig-Dispenser is a low-tech product that comes with clear instructions for use. CLICK HERE to see what the ATTTA had to say about the Liebig - Dispenser.