Can you help me prevent the presence of yellowjackets?
The good news is that you don’t need to do anything to eliminate your yellowjackets, as long as you have the patience to wait until mid-December or, if we have a mild winter, until mid-January. By that time, all the residents of the nest will have died of natural causes. The only survivors will be the mated queens who will find a sheltered refuge elsewhere. Meantime, everyone should stay away from the area.
If you are too impatient to wait, you can either use a commercial aerosol formulated to kill yellowjackets or you can hire a pest-control company. If you use the aerosol, locate the nest opening during the day and then apply the entire can of aerosol late at night. It’s useful to know that the wasps may have more than one entrance/exit. If so, you may need to repeat the treatment several times. Also, see Yellowjackets and Other Social Wasps.