Will wd-40 kill a wasp
Yes, some people do use the penetrating oil and water-displacing spray WD-40 to kill wasps, especially if the nest is affixed to something like a door frame of a house or car, or perhaps under the frame of a bay window where you might not want the chemicals of insecticide seeping into your home or vehicle.
It also seems that WD-40 can be used as a deterrent, while it's unclear if it's the odor, a slick surface that makes it difficult to attach their nest, or a combination of both. Spraying some WD-40 around areas to which they are attracted for nesting has been known to keep them from doing so again.
In news to keep you awake at night, the Atlanta Journal-Constitution is reporting that a Giant nest of wasps crashed through a home’s ceiling in Wolverhampton.