This is a new discovery made by my mom that I figured might be helpful to other people. In our yard, we grow spearmint. I don't remember exactly why she tried using it against bees, but placing a cutting of spearmint on our picnic table has proved to be a very effective bee repellant. Like I mean one day we were getting swarmed with meatbees while eating outside, so we put a cutting of spearmint on the table, and we didn't see a single bee after that. So if you want to get rid of bees, plant spearmint and use cuttings of it whenever you eat outdoors.
And if you're going to plant some spearmint, I should probably tell you that it's extremely agressive in terms of spreading by root. So plant it in a pot for best results.