Fuente: WIPO "varroa" A beehive draw /floor system 1,2,3,4 that has a thermal reflective base 4 that allows heat to be directed 14 into the beehive during the thermotherapy treatment of the beehive against varroa mites. The thermal reflective layer may be placed on the base of the tray or floor 4. One or a multitude of phase change material (PCM) devices 5 can be placed on top of the thermal reflective base 4. The draw/floor system can be installed within a beehive as a replacement for the conventional bottom board/floor of a hive (8, fig 5) or installed to treat only the brood box within a beehive (fig 8). The heat from the PCM travels upwards through the components of the beehive or brood box.