In most areas wasps are a beneficial insect as they feed on other insects that can be a nuisance to man. Wasps become more of a problem in parks and populated areas in the late summer and early fall as they seek out sweet liquids and carbohydrates. At this time they are far more aggressive when they are in areas where food is outdoors, such as picnics, deck kitchens, composting fruit and pop containers.
Wasp colonies last for only one year. Only the new queens survive the winter by leaving the nests in the late summer, mating and wintering in a dormant state in rotted logs, loose bark, or in small spaces in the exteriors of buildings. Once the weather warms up the queens build new nests in new sites.
Nests are identified by their oval shape and are usually suspended in covered areas. The size of the nest can vary depending on the time of year and the availability of food.