Green Gobbler’s 20% Vinegar Weed Killer packs a punch. Use it to kill all types of weeds including dandelions crabgrass and other annual and perennial weeds. Our vinegar is approved for organic use and OMRI-Listed. It is eco-friendly because it is biodegradable meaning it will promptly degrade in soil. Our 20% Vinegar is a non-selective herbicide derived from corn. With this mighty formula you can control weeds and grasses without using synthetic chemicals like glyphosate.