Kill Yellow Nut Sedge with Bonides Sedge Ender Concentrate! Bonide Sedge Ender Concentrate uses a combination of active ingredients to provide pre-and post-emergent control of sedges, crabgrass, and annual and broadleaf weeds. Safe on Southern and Northern lawns (warm and cool-season grasses), Bonide Sedge Ender Concentrate is an excellent choice for residential lawns. Prodiamine provides pre-emergent control, while sulfentrazone provides post-emergent control. One pint will treat from 2,000 to 8,700 sq. ft. Starts working on contact and is rainproof; it won’t wash away. It kills the toughest weeds, down to the root, not the lawn.