european wasps are smaller, but they can have much much bigger nests
think 6000 for a normal summer, or 15000 if it's really hot for a long time..
And they usually live underground or under a roof or somewhere that you just can't destroy em easily..
The key is to trap the scouts, because if even just one of the bastards manages to get back to the nest to tell em you are having a BBQ... ,fogettabout it..
Don't whack em, even if you succeed a dead wasp gives off something that attracts and pisses off the others..
This works, I do it every summer... orange juice in bottle funnel
