We had a small area right off the stoop to our pedestrian door at the garage that grew a bunch of different stuff. We don’t use chemicals and I got weary of pulling every few days. I dumped salt over a 3×3 area and it took care of it. That was two years ago and it’s still not growing anything there. We have mulch over it, as we did before, and nothing is coming through for a bit over two years.