Yellow jackets are mainly ground-nesters. Their colonies can be found under porches or steps, in sidewalk cracks, or at the base of trees. Some yellow jackets build aerial nests in bushes or low-hanging branches. Yellow jackets typically do not cause structural damage to homes. They might, however, build nests in attics or walls and will defend them. On occasion, the pests chew through drywall to enter living spaces.
If disturbed when they are out foraging or protect their hives, yellow jackets will defend themselves. Their stings can be painful. It is best to avoid a yellow jacket nests.
A colony may contain 1,000 or more workers by fall. All of the workers are sterile females. In late summer males will begin to appear. When they become adults, they will mate with the females that will become the next year’s queens.
The fertilized females will hibernate through the winter. The workers and the males will perish when the weather turns cold