 Unleashing full residual power before weeds have a chance to emerge. Pre or early post application, they are hopeless against such effective chemistry. Sertain herbicide from BASF. Always read and follow label directions. There are drinks. Then there are drinks from McDonald's. Let me sound out the difference. There's coffee. Then there's freshly brewed premium roast coffee. There's tea. Then there's deliciously icy sweet tea. There are soft drinks. Then there's Mickey D's soft drinks like a refreshingly classic Coke.