Time to get serious about killing mosquitoes? Buy a MistAway misting system and install the nozzles around the perimeter of your property. There is noting else like it.  Schedule an automatic mist just before dawn to decimate your mosquito population.  The highly diluted pyrethrin (or permethrin) is destroyed by sunlight and leaves no residue. This schedule greatly minimizes the harming of beneficial insects like butterflies and bees are that active during the day. Just before dusk a second automatic misting kills the mosquitoes that love to come out at sunset. You experience backyard comfort all day long, day after day, all summer long -- nothing else comes close.