Anyone doing the mosquito barrier program again this year? If so, how is it going so far? I am going to get some of this stuff and see it work for myself before I go and test for the mosquito classification license. What kind of a sprayer works best? I re-read the post from last year about mosquito barrier and I have to admit I don't know what is meant by a PG. Is it a kind of back pack sprayer? If I were to use a back pack, which one spacifically would work best? I have a echo and shindaiwa catalog in front of me so if anyone would want to tell me a specific model out of these 2 brands at least it would give me an idea. Thanks for the help.