Selective post-emergent herbicide. Control nutsedge after emergence in turfgrass including: Bahia, Bermuda, centipede, creeping bentgrass, Kentucky bluegrass, St. Augustine, tall and fine fescue, perennial ryegrass, and zoysia. 1 water soluble bag per gallon of water. Add 2 teaspoons nonionic surfactant (recommended Hi-Yield spreader sticker) which helps penetrate the waxy layer of leaf facilitating absorption into the weed. Use mixture the same day it is blended - do not store diluted mixture as it will degrade. Active ingredient: 75% halosulfuron-methyl. 0.03 oz.