I found this source of smoothbore wadding yesterday, the hard way. I was doing some work next to my garage and accidentally shook the blackberry bramble it is in. The loud buzzing that followed alerted me to their presence so I quickly vacated the premises before the angry cloud of hornets was able to descend upon me. I only got stung once, but that was plenty! I think I'll wait until things cool off, both literally and figuratively, before I have another conversation with the occupants.
Darren