I haven't seen them yet (NE of Williamsport) and am hoping I never do but it's just a matter of time I think. I am thankful that I live where I plant my trees and can spray very quickly once I notice anything happening. I did that this year with gypsy moth caterpillars. I had a friend who lives 30+ miles from his cabin who was making the trip every other day when they were bad to spray not only his trees but also his cabin as they were so thick he didn't want them to damage it. I had to make some quick runs up the hill with some spray earlier this summer to combat the gypsy moth caterpillars, but can't imagine having to do that from a distance. After next spring, I will have 33 fruit trees in my plot, along with ~3 dozen trees in a screen near the border. Just that is alot to spray and I also have ~3 dozen fruit trees below my house. I guess I should just pray for no additional pests and get the wand on my sprayer fixed.....