Hornets, quite a problem which sooner, or later every beekeeper stumbles upon at his/hers apiary. Before I tell you more about them, let me assure you that there is solution to hornet problem. Now, when you are relieved that there is solution to this issue, lets continue about hornets. They feed themselves with sugar-rich plant food and other insects. Due to strength of their venom and due to their search for sugar-rich food, very often they will combine those two and attack honeybees. Insects which hornets catch will be fed to larvae in their own colony.
Most of beekeepers will have issue of hornets, and other insects that feed on honeybees, settling near their colonies. Instead of reaching for insecticide or other chemical solutions, I’d rather advise this simple, natural solution. This trap works not just on hornets, but various other flying insects too.
To construct trap, you will need small plastic bottle and apple cider vinegar (older the better) . Cut off top part of bottle, and fill 1/3 of bottle with apple vinegar. For second step simply put cut off part in bottle again, but turn it around so that the throat of bottle would come inside of plastic bottle. Restrain bottles to hang from branch or anything similar, close to your colonies. Scent of Apple cider vinegar will attract all flying insects from area around it. Honeybees are safe because apple cider vinegar is not sweet. Some insects will drown in apple cider vinegar, others would just be unable to fly out of bottle. This is because span of wings of hornets is too wide to fly out of it.
This trap remains functional for MONTHS! Once u start seeing hornets or other unwanted flying insects at your apiary, all you have to do is to renew procedure. Depending on size of your apiary, you might want to add several or even few dozens of traps, one trap usually will work for 5-6 square meters (3-4 square feet)
P.S. It will work as well if you just pour some apple cider vinegar into bottles and to hang them onto branches ( above given tips just make it even more difficult for insects to get out of trap once they get caught).
Hope you liked this practical solution for hornet problem.