Black pepper wont always work, I've seen the yellow jackets so bad it didn't even phase them. I was on an early high hunt in Oregon and we shot two deer and getting them chunked up and in the cooler was like something out of a horror movie. Even skinning them meant grabbing hand fulls of hornets because they were literally covered with bees. Any piece of meat left out was literally covered in bees to the point you could not see anything but bees in just a couple minutes. The black pepper had no effect at all, getting all the bees off before putting the quarters in the cooler was impossible, had to get the last of the bees off when we got home.