last summer was attacked by bees - and bats
was cutting grass at dusk - rode under a tree and hit a bees nest ... might have been hornets (?)
fell off the tractor when I caught my leg on a lever as I jumped off - then stumbled to my feet and bats were then flying / diving at me - maybe to scoop up the bees
I've also driven over bees nests that were in holes in the ground - neighbor told me they might have been 'bald face hornets' (?)
(later placed firewood in the hole and added some two stroke fuel and burned them out)
Maybe you aren't cut out for lawn mowing?