They are social insects and live together in large paper nests in the ground or in trees, shrubs or structures. The nests are founded in the spring and remain active for only one year. The workers forage for caterpillars and other insects to feed the young, and will defend the nest by stinging intruders repeatedly. The colony does not survive the winter. Nest should not be disturbed unless a threat to people or pets.
Special aerosols can deliver a spray that penetrates the nest to kill the colony.
Liquid insecticides can be applied to ground nests.