I used Finale with an ounce of Sharpen Herbicide and it killed briars, oak and gum samplings as well as misc broadleaves brown and dead within 3 days... even took out clover that 41%Glyphosate (even spiked with UAN) barely curled the leaves on. My new go to combination.
This product smokes Horse Tail/Mare's Tail weed and others . We have had lots of trouble with this weed and found ourselves behind a 500,000 btu burner to get rid of them. Add your other post killer and surfactant and your done.