Agreed... when it becomes necessary to "use something" you want to use the most effective... Roundup Poison Ivy & Brush Killer is what's working for me out there (I think it has both Triclopyr & glypsophate). I don't spray it willy nilly on anything I could just as well pull, but the poison ivy is really entrenched in that fence row of trees along the back of our yard.
I've heard full strength vinegar (stronger than store brand white vinegar, you want it to be like 80%) is effective on freshly cut stubs of shrubs and on stubborn weeds, so maybe...
I do realize this is a thread to find a "non-chemical" means of control, but that's just tough to do with some plants. I need to have that poison ivy gone. Even when I'm "rid" of it, the urishol oil will persist in the soil, probably at least another 10 years, so I'll always have to be careful in that area.
