Wasps have two pairs of wings and unlike bees have few or no plumose hairs. Wasp venom is painful and can cause swelling and faintness as well as serious allergic reaction. Most wasps live in a social structure and can live in nests up to 10,000. A nest can start out the size of a dime and grow to the size of a beach ball. Protected by the rest of the colony, the queen can live for several years. Locating the nest can require inspecting the entry points in the eves as well as at ground level. Treatment techniques vary depending on the nest location. Wasps are territorial and will generally attempt to return if nesting site is left untreated.