[RKDinOKC]

I have almost a full gallon of real roundup from the 70's when it first came out. It is way more concentrated. Just 1/2 teaspoon per 2 gallon sprayer is too much and will kill anything. First time I mixed it up and sprayed the cracks in my sidewalk and drive it killed the stuff in the cracks and turned the yard to dirt for a foot out from where each crack met the yard. Now I mix it even weaker and spray much more sparingly. And it's NOT permanent, stuff starts growing back in a month. The label is so old it's unreadable, but there was a specific length of time and you could plant more stuff.