Disclosed is a chemical vaporizer device for the purposes of vaporizing and controllably dispensing a pesticide material into a bee hive to kill varroa mites and other predatory pests that threaten honey bees. The device comprises an elongated cylinder having a proximal and distal end, a compressed air inlet, air pressure controller and heating element. The distal end of the device comprises a diffuser outlet and a coiled heating element, which is adapted to rapidly vaporize granular pesticide material in the cylinder while the compressed air discharges the vapor in a constant manner and in higher busts on demand. The user supports the body of the device while controlling the outgoing vapor pesticide by modulating the compressed air controller, which actuates an air valve in the controller. Material is fed into the device proximal end, vaporized and forcibly discharged through the distal end and into a bee hive.
