One of the disadvantages to living by a body of water. I killed three of them today' I found a little trick. Get your body real close to a building and sometimes they will land on the building and then you can whack em.
seems like most of the bugs around here come out in thousands about July 4th but been a dry year so hopping the mosquitoes are few this year. Fly's will be a problem I think but time will tell.