Works amazing Killing all the bad grass in my patio I was furious because looks like every summer I have a different plant coming out!! But with this product keeps it Away

We bought this product to kill the weeds in the gravel driveway. After using a whole bottle, the weeds are still there with no sign of leaving.

Product seemed to be ineffective. I was not happy with results. Not a good value for what you get. Also has a pungent smell