I have used White Vinegar and Rock salt to control weeds here in Tennessee around the Pool as it has White Granite rocks around the outside of the pool grounds . and even come back the next day with the Industrial Bleach (Green Jug at Lowes ) and sprayed it over the rocks this area has NO plants other then weeds and we do not want anything growing there . it will kill the weeds out right in just a few days to about a week with the heat and no rain then the weeds are removed and the rock area is nice and white as it should be it last the summer and until the next Spring with a little Maintenance of a lesser amount of the solution applied .
Sarge
