4-Speed XT is a postemergent herbicide which delivers powerful weed control. Deader. Faster. With its high-powered combination of four active ingredients, 4-Speed makes fast work of even the toughest weed control challenges. The combination of pyraflufen, triclopyr, 2,4-D and dicamba controls hundreds of broadleaf weeds in turf, including difficult species like oxalis, wild violet, spurges, and many more. Fast acting broadleaf weed control with visible results within 24 to 48 hours Broad-spectru