mosquitoes in vegas? i've been here for 15 years and have yet to see one! even now, living 2 miles from a lake 100 miles north of vegas! but i was down in az last month when they were getting hit by a series of storms and puddles were everywhere and there were a shitload of em...couldn't even hang in the guy's backyard long enough to look for preflowers! but up here i keep the back door open nearly 24 hours a day for the dogs yet there have been none...not a single one! a few flies from the nearby cattle lot but nothing more...no ticks, fleas, biting flies, mosquitoes...nothing like that!