Correct, Sweet Gum, Chinese privet (Ligustrum sinense) among others. We use Arsenal or a mix for a "Release Agent" in standing young Pine Plantations to eliminate undesirable Trees with Ground or Aerial application on a broad spectrum application. The Pine Tree can tolerate the application but Broadleaf Trees cannot. In mature Pine stands we use selective kill to control undesirable Trees. Some Foresters use a drill and some use a "Hypo-Hatchet", it's much cheaper to simply drill or hack and spray because of the cost of the "Hypo-Hatchet".Some trees (Ailanthus for one) will spread through the root system if simply cut down. You have to kill the tree first to prevent spreading.