Yellow jackets are the most common stinging insect in Washington State. They are a very aggressive insect, even more so in the late summer and early fall when seeking carbohydrates rather than protein food sources. Colonies can contain numbers as large as 4,000 workers. They typically form their nests in attic spaces and wall voids of structures, as well as, in soil cavities. They also form hanging nests in trees and on eave overhangs of buildings. Treating (or not treating) these nests can be very dangerous and is well worth leaving treatment to the professional.

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Yellow Jacket