In message , Rod
writes
Don't think the foundations (if any) in this house go that deep. The
volume of sand the ants have shifted in the 29 years we've been here is
unbelievable, under the walls inside and out, under the floor tiles,
around the fireplace. It's hard to know what's left holding the place
up so if I go quiet - better come and search the rubble. We've had the
flying ants coming from the middle of the floor ar well as from under
the walls and behind the plaster.

I think we're on the way to same. For many years we've had a few around
one of the windows, but this year the population seems to have exploded
- millions of flying ants coming out of the walls for a whole week! I
think the whole cavity, filled with rockwool, must be one enormous ants'
nest....
--
Klara, Gatwick basin