It’s August – bee season. Finally found a good way to keep bald-faced hornets & yellow jackets off of the sugar water feeders. Apply Tea Tree Oil ( any drug store ) around the opening and they won’t land. Doesn’t mean they won’t keep trying for a few days, but it does let the hummers get in for a drink and the oil doesn’t seem to bother them at all. I use a q-tip to dab the oil around the opening taking care not to touch anything the hummingbirds would.
Have to reapply fairly often, but small price to pay to keep bees from taking over the feeder.
Pete