landscape contractors have much stronger effective chemicals, to be
assured they are used properly....

homeowners type chemicals are weak versions of what used to be
effective treatments.

theres a safe cheap effective treatment, spread rocksalt on the area
and water it in preferably with hot water.

ever notice the dead grass near sidewalks treated with salt? just do it
on your driveway.

i dump it in my washtub and add hot water a few times a year, espically
in the spring, my terracota sewer line is bad, this kills the tree
roots while the trees grow fine.

safe cheap effective