All this hatred! Golly I bet old Hans and his SAFE buddies will be mounting a campaign soon called SOWFE (save our wasps from extermination)
Seriously though, on tho odd occasions Ive found nests of german wasps, a couple of puffs of flystrike powder in the hole has done the trick. I have mixed advantage with sardines and that seemed to work too Its imidacloparid and some crop sprays use it so that also seems to be an option.
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