I guess you aren't asking this from the UK, are you ...
Cos in the UK I would phone the local Environmental Health Office and they come and 'blow smokey stuff' at the nest and the wasps don't like it and go away. They never return to an old nest apparently.
In Doha? I guess there MUST be an Environmental Health Office which deals with pests (cockroach infestation and the like).
That's about all I can suggest. Perhaps someone tomorrow will have a better answer.
I guess you aren't asking this from the UK, are you ...
Cos in the UK I would phone the local Environmental Health Office and they come and 'blow smokey stuff' at the nest and the wasps don't like it and go away. They never return to an old nest apparently.
In Doha? I guess there MUST be an Environmental Health Office which deals with pests (cockroach infestation and the like).
That's about all I can suggest. Perhaps someone tomorrow will have a better answer.
Good Luck!
bzzzzzzz :P