I recently discovered a fairly large (a few hundred wasps, from the look of it) wasp-nest under the eaves on the side of my house.
Anyways, I called a exterminator (Terminix, actually), and they tried to push a year-long maintenance contract on me, and claimed that wasps leave pheremones, and if you don't continually kill them off, they will keep coming back.
In my own research, there is no note of this particular wasp behaviour on wikipedia, and I have actually found a lot of insect-control websites that specifically say wasps don't nest in the same place every year. This makes me think that Terminix may be stringing me along a bit.
Has anyone heard this claim "they will return unless you kill them off repeatedly" statement before, or is it likely that I can deal with it myself with a can of wasp-killer spray?