What works on ANYTHING is RoundUp poison ivy formula. It’s not just glyphosate; it has 2% triclopyr as well. It’s expensive—$10 for a quart of concentrate that makes five or so gallons—but you can also mix your own much more cheaply by buying generic glyphosate and triclopyr.
I also like Sow’s product Graze-On Next for large areas. It’s a serious ag product and you do need to wear protective gear. It takes longer to work. But it’s a selective broad-leaf weed killer so there’s no worry about getting it on grasses you want to keep. You can use it in a pressure pump applicator or put it in a big boom sprayer if you have many acres to cover.
Thanks for the info!
Where can I get RoundUp poison ivy formula?
Home depot used to have it (orange label, not blue), but don’t carry it anymore.
I don’t have a lot of land; the Dallas grass is near the house.