Has anybody sprayed this on their hayfields. Ive read the label front to back. I have put 1-1.5oz per acre and sprayed on a sunny day within the 7 day window from cutting the hay. It is supposed to clean up the majority of anything but Bermuda grass, but it has been almost 2 weeks and I can't hardly tell any difference or die-off of anything in the field and i'm certain their is foxtail and crab grass in the mix. TIA