Hi all. As with most of us, I can't handle chemicals. I have several rock paths with gravel between. I had put plastic down, then sand, then the rock, followed by the gravel. It has looked great for a number of years but dirt has drifted into it. This year, the weeds are growing strong inbetween. I used to just pull the stuff in the past but it is out of control. I was thinking of using vinegar or a butaine torch to kill what is growing. Any idea on what would work for me. Thanks in advance. Oh, and a natural dandelion killer would be great too.