I think back then, some time before, in a galaxy far far away...just joking, I think it was in China. Anyway, I know of this incident where there was also an "abundance" of mosquitoes, and what the people did there was have a mosquito catching contest every day, at some certain time when the skies were swarming with them. It might be a good idea, y'know, have a weekly prize for whoever catches the most. And the contest actually worked, in China, and the mosquito population started to decline. Maybe you should try something like that, you know, get together the family, grandma and grandpa, cousins and siblings, and go hunt some mosquito ass! *lol*
by the way, I think a sledgehammer tied to a length of string would work too, just swing it around above your head and you'd get twice, maybe even thrice the "killage" than ordinary, though poor accuracy and the possibility of the sledgehammer coming loose and killing someone and getting a lawsuit are definitely feasible.