MSM is a highly selective premium post-emergent herbicide for effective control of grassy and broadleaf weeds in turfgrass. MSM is specially formulated to control annual and perennial weedy grasses such as Ryegrass, Bahiagrass and Foxtail and alos provide effective control of broadleaf weeds such as Clover and Dollarweed. The active ingredient, Metsulfuron Methyl, is absorbed through the plant’s surface and roots to inhibit the production of key amino acids. This action prevents cell division and stops weed growth. Works effectively on warm season turf, yet is gentle on the environment due to its low use rate Removes bahiagrass from St. Augustine and Bermuda grasses Controls annual and perennial weedy grasses and broadleaf weeds, including rosette- and vining-type dicots Golf courses (tees, fairways, aprons, roughs), sod farms, lawns, parks, cemetaries, non-crop areas MSM Selective Herbicide Equivalent to Blade MetSulfuron Methyl Selective herbicide to control bahiagrass in bermudagrass. Control of perennial grasses and certain broadleaf weeds including dandelions MSM is labeled to control Bahiagrass, Foxtail and Ryegrass and a long list of broadleaf (dicot) weeds. It is to be used ONLY on Kentucky Bluegrass, Fine Fescue, Bermudagrass, St Augustinegrass, Zoysiagrass (Meyer and Emerald) and Centipedegrass turf areas.