08-27-2009, 06:17 PM
What if you mixed Roundup with a broadleaf herbicide as well, maybe something like 24D, aka CoolShot? When I have needed total weed kill in the past, this is what does the trick. I have a friend in the lawn care business back in Illinois. 24D/Coolshot, when used alone, is a great weedkiller in grass as it doesn't kill most normal grasses.