Yellow jackets can respond to their members being killed by swarming. I wouldn't recommend the racket method for them. Instead, spray their nest. If it's overhead a spray liquid is best, if in the ground, foaming spray works great. Or, for a natural solution, invite a skunk to dig up the nest. Skunks' opinion of yellow jackets is the same of a kid's about ice cream on a hot day! They love to eat them!

Then you have to deal with skunk removal, but, Hey! no solution's perfect....