We still use it here on the farms, you need a "restricted use" pesticide license to buy it because it sports the old scull & crossbones on it like all restricted peticides. "Gramaxone" is the name. Farmers us it all the time on the fields that grow the vegetables most of us eat. It smells bad, about 6 ounces of the stuff is enough for about 500 gallon mix depending on where your applying it and what adjuvants you are mixing with it.
Cheers,
BV