The message
from "Franz Heymann" contains these words:

You can't have your cake and eat it.
Are you nor being selfish, expecting them to labour on your behalf,
and yet denying them s little lebensraum?
Why not let them live in peace in what sounds like a reasonably remote
corner of your garden?

I don't think there are any "remote" corners in David's amazing
garden, but there is a big banana, and wasps might well become a pain in
the arse. (Was the vicar's famous visit to view the banana recorded in
urg or EG? Still makes me laugh).

If the nest is accessible, a blast from a hosepipe reduces them to
pulp in seconds.

Janet.