Hot damn o_o Those aren't wasps, are they?
Still, how soon can you call an exterminator?
Those are bees. Wasps -- imagine an ant, but larger and with wings.
Bees are actually pretty important to agriculture since they do a lot of pollinating... blah blah blah, watch the Discovery Channel. Wasps are important, too, since they prey on other insects.
Bottom line, though, it's probably better if the bees get relocated somewhere else away from people rather than just exterminated. I've actually seen pictures of a guy in a beekeeper's suit using a big ass vacuum hose to just suck the little buggers into safe containment, for convenient relocation later.