Our raw chunk propolis is washed and cleaned for purity. Propolis is plant resin that is collected by honeybees to seal cracks in the hive. It is found to be highly antimicrobial and beneficial to the health of honeybees in the hive. Propolis is used by humans for a wide range of medicinals to improve healing and reduce infection. The chunks can be used as-is for tinctures or frozen and crushed into a powder for salves or other uses. Honeybees here in the northeast are likely to collect resins from the birch, beech, horse chestnut, dogwood, and poplar trees.