Look at something like Bayer Brush Killer.
Brush Killer Plus | Bayer Advanced
I have been a licensed commercial applicator for over 30 years.
Bayer Brush Killer
Product Description
From the Manufacturer
One application kills poison ivy, poison oak, kudzu and other tough brush problems down to the roots. How It Works: This
selective systemic herbicide enters plants through their leaves, green or cut woody shoots, and roots then moves throughout the plant and interferes with processes found only in plants. Visual symptoms, such as wilting and yellowing, appear in 1 to 6 weeks. Kills: Poison ivy, poison oak, poplar, ragweed, raspberry, salmonberry, sassafras, scotch broom, smartweed, spurge, sumac, sweetbay, magnolia, sweetgum, sycamore, tanoak, tansy ragwort, thimbleberry, trumpet creeper, tulip poplar, vetch, virginia creeper, western hemlock,
wild grape, wild lettuce,
wild rose, wild violet, willow and winged elm.
Where to Use: Use around homes, cabins, buildings, fences, walkways, trails and
wooded areas. When to Use: When brush is leafed out. Active Ingredients: Triclopyr, triethylamine salt: 0.8%.
Product Description
Penetrating formula kills tough brush roots and all. Kills Kudzu, Poison Ivy, Poison Oak and Wild Bramble Berries. PLUS 70+ other types of weeds and brush.
{Bayer seems to be less dangerous to trees, less likely to migrate, less dangerous to the applier PLUS wild grapes are specifically included along with wild roses, which I also have infesting the same area.}