A device and associated process for hygienizing and warming beehives aiming at the improvement of the production of organic bee produce, the device being installed in a beebox including an entrance for bees and frames for accommodating bees and bee products, and between the frames, a spacing making available one empty frame for installing the device. The device comprises a ceramic block inserted in the one empty frame provided with at least one row containing from 8 to 32 channels being in the vertical position and where the lower end and the upper end of the channels are opened towards the inner portion of the beehive, the channels being: i) thermally insulated from the rest of the one frame with the aid of wings and ii) traversed by conducting filaments connected to an energy source by a flat wire, whereby the electrical current crossing the filaments makes it possible to attain temperatures inside the channeles between 300-350.degree. C. with ensuing warming of the air circulating in the beehive by convection, the warmed air from the upper ends of the channels creating a negative pressure in the lower ends of same, whereby outer colder air is sucked towards the ceramic channels so as to sustain continuous circulation of air through the channels, with the consequent extermination of the microorganisms present in the air as the microorganisms pass through the warmed channels.