A frame and comb foundation and method for controlling Varroa mites in a honeybee hive. In a first embodiment the invention is comprised of half portions of the frame and comb foundation in combination with a power supply, heating element, electronic control unit (ECU), temperature sensor and an optional diagnostic system. The ECU which may be mounted on the frame and comb foundation or, in a separate enclosure is comprised of a micro-controller and other circuitry. The temperature sensor is mounted adjacent to the heating unit. The power supply may mobile or stationary, such as a battery or line current.In a second embodiment, the frame and comb foundation is interconnected with similar frame and comb foundations in multiple hives that include individual ECUs and temperature sensors and individual wireless electronic communication systems, a single power source and individual heating elements. The multiple temperature sensors are mounted adjacent to the heating elements. The ECUs are mounted on the frame and comb foundations or in separate enclosures. The ECUs are comprised of logic circuits or micro-controllers and other circuitry. The power source may be a mobile or stationary source such as a battery.
