I'm finding the vinegar and detergent is causing the foliage to wilt, turn brown and die, which was my only goal. I just don't want anything green growing under the wire to short things out. Those dandelions and that crab grass are both pretty persistent. It may take a several treatments to kill things completely. I am aware that adding two cups of table salt to a gallon of vinegar is supposed to help sterilize the soil to retard future growth, but I"m not concerned about that, as I may want to move my fence. But a gallon of vinegar is about $2, so pretty cheap weed control.