We had a "bloom" of flies about a month ago....but they subsided after about a week. I dunno what causes it. They came in from outside...because when we started leaving all unscreened doors and windows CLOSED...we didnt' get any new live ones.
Naturally, I was on major 'fly patrol'...with my trusty yellow plastic fly swatter.
To get them...if and when they land...you have to 'see' yourself getting it SMACK DOWN. "See it...get it!" It always works.
Visualize the kill...and you will succeed.
My goodness...did I just say that???