Navigate Granular Aquatic Herbicide is a selective herbicide that deals with nuisance aquatic plants. It controls plants such as water lilies, coontail, bladderwort, and spatterdock. The granules deliver the weed-controlling substance into the vital root zone area for plant absorption as they sink into the bottom of the lake or pond. This product ensures that native and desirable aquatic species remain for oxygen production, fish habitat, and bottom cover. Provides excellent control when used at first signs of growth; before plants reach the surface. Best used on ponds, lakes, reservoirs, and drainage ditches. Available in a 50-pound bag.