I plan to do a lot of mosquito spraying with garlic this year. First, can anyone tell me which backpack mister "fogger" is the most powerful? It looks like it may be the SR420 from Stihl but I'm not sure. I want one that will blow away mosquitos as well as my customers minds. Like WOW! You know what I mean? Does anyone here have experience with a backpack? All helpful hints or tips will be appreciated.