Abstract: Disclosed is an efficient delivery output, for an oxalic acid vaporizer, for use with a hive-mounted vaporizer adapter device to more uniformly distribute hot vapor into an interior of a beekeeping device. The efficient delivery output includes an output body having a proximal end and a distal end, and an oxalic acid vapor passageway extending between the proximal end and the distal end; wherein the proximal end is configured to direct and concentrate oxalic acid vapors received from an oxalic acid reservoir of the oxalic acid vaporizer; and the distal end is configured to deliver the concentrated oxalic acid vapors to a central area of the beekeeping device. The vaporizer adapter device engages with a beekeeping hive. The adapter device includes an adapter body (e.g., a flat plate) having at least one hive engagement feature (e.g., side edges of the plate); at least one manipulation feature (e.g., a lip for gripping a front of the plate); and a recess for providing a reservoir (e.g.

Abstract: Disclosed is a vaporizer adapter device for a beekeeping device. The adapter device includes an adapter body (e.g., a flat plate) having at least one hive engagement feature (e.g., side edges of the plate); at least one manipulation feature (e.g., a lip for gripping a front of the plate); and a recess for providing a reservoir (e.g., a space for the hot acid vapor to gather) below the hive, the reservoir being open to an interior of the hive, the recess including a port (e.g., a through hole) configured to accommodate a vaporizer output (e.g., a tube) of a vaporizer.