Hello Tree Expert! We live in Ada, Michigan with a lot of beautiful tall norway/red pine trees in our yard and surrounding our property. They are all probably 30-50+ years old. We have lived here 14 years, and that is when the builder cleared much of the woods for our lot and built our home. We had a tree cutting crew out to cut down some of the dead pine in the yard. The tree service said that they believe we have pine borers in some of the trees - clearly indicated by small 1/8-1/4" holes in some/all of the dead trees' bark (of course, the needles were all brown, or the needles had all fallen off). They didn't think we could do anything about the pine borers except remove the trees that were dead to keep the borers from moving to the live pine. Again, our property is surrounded by all these pine, so we can't "fell" every tree that gets the borers. Questions: (1) How can I be sure of the type of pest that might be killing the tree (or are the pine just getting old; or were the pines disrupted from when the builders cleared much of the land/woods), and (2) if it truly is pine borers/beetles, is there an insecticide that can treat for it? If yes, (3) recommended insecticide service to do so? Would love to have you come out to look at the living trees. the pic attached is of healthy trees - for you to see if they are norway pine, red pine, or some other sort of pine..... Thank you! Claire