Since yellowjackets can travel great distances and will do so when searching for food, the nest could be in someone else's yard. Nests located on other property may never be directly treated. If the members of this nest are annoying you, the only control method available is baiting. Their nests are prolific and will quickly replace the workers and scouts you traps are able to catch. Since you allowing the nest to live, you will never get control.
Summer is here or coming.
Insects are abundant and Yellow Jackets seem to be anywhere we want to enjoy a quiet dinner or barbecue outside. To stop them from harassing you, identify where the nest is. Treat nests in the ground by drenching. Nests in wall voids of a building should be treated with a dust. This treatment must be done from inside.