How do you get rid of yellow jackets in the ground?
Deschutes County Oregon yellow jackets
Thanks for your question about eradicating yellow jackets! They are hungry and plentiful at this time of the year (and interested in meat and rotting fruit!)
Here's an excerpt from an OSU publication about getting rid of these wasps:
"By fall, yellow jacket nests have produced a crop of new queens and males. By the first frost, most workers and queens leave the nest to find a protected spot to spend the winter. They emerge in spring to begin the cycle again. Only new queens survive the winter, however, and they almost never reuse the previous year's nest.
To destroy a yellow jacket nest, treat the nest at night, when the workers are inside and relatively calm. Use an aerosol that propels a stream of insecticide up to 20 feet so that you can stand at a safe distance and treat directly into the nest opening.
"Don't pour petroleum products into ground nests," Penhallegon said. "This is dangerous, environmentally harmful and illegal. Use products specifically made for yellow jacket control only. Be sure to read and follow the pesticide product label. Remember, the label is the law."
Non-toxic yellow jacket traps are available in yard and garden stores. The most effective traps use a synthetic attractant to lure worker yellow jackets into a trap. Fruit juice or meat can be used as attractants as well. Traps may provide temporary relief by drawing workers away from people, but they are not effective for area-wide nest control."
Here's a link to the whole article.