I own a stihl sr420 and trying to figure out the product that is used in the mist/fogger for treating mosquitos. I know about the product that is used in the misting systems but was told that they dont use the same product. I really dont want to pay for a misting system and since i already own the blower I figured i would do it myself. It is used by some companies that do something called barrier spray. They just spray all the areas around your yard and it suppose to stop mosquitos, gnats, even spiders for 3 to 4 weeks. I was told that they have 2 kinds. I think they said it had Pyrethrin in one and garlic in the other. Thanks for any info provided.