Spread evenly throughout treatment area. Weeds need to be present. When applying Navigate® aquatic herbicide, we recommend using a Broadcasting Spreader. Selective Herbicide is formulated to control water milfoil, water stargrass, bladderwort, white and yellow water lily, water shield, water chestnut, and coontail. Water use is restricted for non-turf irrigation and drinking (human consumption), see label for details. Active ingredient is 27.6% butoxyethyl ester of 2,4-Dichlorophenoxyacetic acid. Application rate varies by target plant, density, and water depth. See label for details.