I have today found a wasp nest inside an old haystack (the hay that never got baled last summer..), and I think a badger has already tried to get to it. I wouldn't have seen it otherwise. No idea how big it is, and I need to know what kinds of spray I could buy (agrimerchants?). My usual method is knocking the nest off when still small into a bucket with water, and I do have a beesuit and gloves. But that wouldn't work with this one.
And would I be best doing this at night, when they are all inside?