Fume boards for beehives efficiently drive bees from honey supers during harvest. The fume board is placed above the honey supers after you have sprayed it or applied bee repellant like Bee Go or Bee-Quick to the felt underside. After about 5-10 minutes, you can remove your emptied super. The bees are driven into the brood chambers, leaving the supers bee-free and ready to harvest. This method works best on warm sunny days.