Over-The-Top Grass Killer from ferti-lome is your one-stop selective herbicide for eliminating weedy grasses without injuring desirable plants. Over-The-Top kills most annual and hard-to-kill perennial grasses up to 1 foot high, in one or two applications. Younger, actively growing seedling weeds are more easily killed than older, mature, well-established grassy weeds which may require a repeat application for control. Kills Bermudagrass, crabgrass, foxtails, quackgrass, and many other weedy grasses. 8 oz. liquid concentrate.