Ortho WeedClear Showdown: Tested Versus Massive Lawn Care... Up To 16,000 Sq. Ft. No Grass Harm (Proper Use) We’ve been testing lawn care solutions, and the Ortho WeedClear Weed Killer for Lawns Ready-To-Spray has impressed us with its broad coverage—up to 16,000 sq. ft. in a single 32 oz can. The ease of use is a standout: just shake, spray, and wait as it swiftly targets dandelions and clover without harming grass when applied correctly. Its concentrated formula means fewer trips to the store, and the non-drip nozzle saves time and mess. While we did notice it requires precision—over-spraying can damage desirable plants—our results were clean and effective. For larger yards, it’s a practical, cost-efficient choice. If controlled application is a priority, Ortho WeedClear delivers reliable results without leaving our grass looking簿ished.