You know..a heavy duty fly swatter (we have one called the king swatter) should be a lot less messy than WATER. LOL (just saying).
Oh...trick my grandma taught me for if one gets to buzzing around ..and you cant "squash" it. (cause your like me and your too busy screaming and running)....
AQUA NET HAIRSPRAY (or just really cheap aerosal hairspray).
Spray the little "darlings" and when it dries they get so sticky they cant fly. SWAT! dead darling.
This also works for giant water bugs, and any other indesiable creepy crawly bug.