This yellowjacket is not a pest. It feeds on live insects, helping to control flies and caterpillars. Nests are found in the ground in open areas like meadows. Nests contain 75 to 400 workers and start to decline in late August to September. This yellowjacket can be a pest because adults are attracted to protein or sugar sources.
Nests are mostly subterranean but can be constructed inside house wall or in aerial locations.
Nests are large and contain 500 to 5000 workers. Nests remain active until September and October. The easiest time to control yellowjackets is in the spring and early summer while the colonies are still small. Baiting worker yellowjackets can be done by using commercially available containers with Knox-Out 2FM pesticide. The pesticide is mixed with canned mackerel or other bait such as fish based cat food.