Back on topic - I personally would be disinclined to use NaCl and acetic acid to kill weeds.
Those are generally toxic to all plants and inhabitants of soil and water. If you have good drainage, they will rapidly leach out of the weed patch and contaminate soil and water downstream.
If Monsanto started selling it, people would rightly call them polluters.
But several people I respect HAVE or DO use vinegar or salt to kill everything in small areas, and most of them are MUCH better gardeners than I am.
So your mileage may vary.
