"A Natural Choice Alternative to other contact Weed Killers" Bradfield Natural 20% Horticultural Vinegar with Yucca Extract "A Natural Choice Alternative to other contact Weed Killers such as Round-Up and is the contact weed killer of choice for organic farms. Bradfield Natural 20% Horticultural Vinegar is 4x more concentrated than the vinegar you buy from the grocery and thats why it it works, this is a non-selective product used to spot treat problem weeds. Be very careful not to get spray on plants you wish to keep. . Bradfield Natural 20% Horticultural Vinegar with Yucca Extract is a Natural Alternative leaving no residues in our environment. Sold in 1 gallon jugs.See attached link for information. Always read and follow label directions. Sold in 1 Gallon Jugs.