"Dave Liquorice" wrote ((snip))
Not all insects are attracted to UV... there is one small fly (about
3mm long) we get that just relatively slowly "floats" about the
middle of rooms that isn't.

Try leaving a (small) glass of red wine overnight in the room. They will
happily drown themselves if it's the same ones we get.

--
Regards
Bob Hobden
W.of London. UK