Pramitol? It's an old chemical and can be effective but really only for weeks, not permanent. Round up does work but it only kills what you spray and it has no residual effect. What many people do with round up is they mow or weedeat the weeds down and then spray them. WRONG! The chemical has to bond to the leaf surface. Let your weed have as much top growth as possible. When youre ready to spray make sure you have the mixture right and add some surfactant or dawn soap to it. This makes it bond to the leaf surface. Make sure your sprayer sprays a good fan pattern and spray your weeds systematically and thoroughly. If you want extended coverage add a pre emergent to the mixture but make sure that you agitate the sprayer to keep it suspended. You can get this stuff at Site One. Rodney, there's one in Pineville, Gastonia, and Cornelius so pick one and get you some professional products and see how it turns out. Site one landscape supply Mount Holly, nc - Google SearchI kept hearing & was told about a Killer that "Sterilizes" the ground, so Nothing will grow there. Seems like it was a "Perma" or Previ, something like that. I went to Tractor supply & asked them. O Yea we know what you want, not expensive when you consider the coverage! Came in a 2 1/2 gallon jug, about $60. Gly Star Plus, a isopropylamine salt at 41%. By the directions that I could make no sense of, it's used by Farmers covering Acres. I started with 1oz/gal. & kept working the concentration up to 5oz/gal. Fawlking waste!!! Yea, it Smells, & turns sprayed area yellow after a week or more. Somewhat kills weeds & grass. Not much effect on heavy brush! AND, the kill last maybe 4-5 weeks. I'd been better off with Round-Up! My main objective was to Kill the grass in my grave driveway, & some other places. Maybe I should just buy stock in Bleach & Vinegar?