So I watched a couple of videos online on how to brew your own cost effective and environment safe weed killer.
A gallon of 40% vinegar, a cup of salt and a good squeeze of dish washing liquid, put it all in your sprayer and shake it up so it mixes well.
I gave it a try this morning on some poison ivy vines growing on one of my oaks in the back yard, gave them a good spraying and checked them a few minutes ago and they are looking poorly. I think another good shot in the morning ought to finish them off.
Al