In my woods I have a number of invasive species I'd like to eliminate. I've cut the ones I could, but a few remain that are out of my league, felling-wise. Trees of heaven, Norway maple, etc. I'd like to use an herbicide that can apply to the trunk to eliminate them. I think I've read about chopping into the trunk with a hatchet, then spraying. Once they are killed, nature can take it's course, no harm done. If I had my choice, I'd use an herbicide available to homeowners, from hd or Lowe's. Any suggestions of what to use would be appreciated.