In the article I found on your site, you say the best product to use to get rid of Virginia Creeper is diluted glyphosate, which is the active ingredient in Roundup. However, the Roundup bottle says nothing about using it to get rid of woody plants such as Virginia Creeper. At the gardening store, they recommended I use a product that is for eliminating woody plants and vines, and that specifies Virginia Creeper. It is Poison Oak & Ivy Killer made by Bonide; the active ingredients are three kinds of dymathylamine salt. Virginia Creeper is one of the plants it lists and its label says it kills the root. Any advice?
Be sure to read the label thoroughly and respect the recommendations for personal protection and environmental hazards. Herbicides can drift with even slight wind and be over-sprayed onto desirable plants if you are not careful.
Yes, use the Bonide product which is specific for broadleaf plants that are hard to kill, and has active ingredients and surfactants to penetrate the waxy cuticle.
Roundup (glyphosate a.i.) is not wrong, it is specific for grasses, but will kill broadleaf plants if used with the correct dilution rate, especially the latest formulation - Roundup ProMax that has potent surfactants as well.