Normally, I'd never spray a fence row. I will spray bushes and saw briers in a fence row, but nothing that would kill the grass. I've got a property line fence, that is really getting grown up. To the point, it's hard to get in it to work on it. I offered to have the fence pushed out, and re do it (my treat btw). Neighbor wasn't feeling it. Not sure why, but to each his own I guess. Ifi mix round up and 2 four D pretty heavy, and wet the whole thing it, will that the vines and briars? There's no species in it, that I find hard to kill. No multifloral rose, and no locust. I'd like to burn it, when it's had time to die. Maybe cut some of the crap out of it, and then keep it maintained like my other fences. Think that mix will do it?