Larry from Lakewood Ranch, Fl writes
The Grass Out Max label does not specify yes or no if it will kill Zoysia Grass. We recommend contacting the manufacturer Agrisel directly at (770) 831-4160. Using a product such as Ranger Pro as a spot treatment will work to treat the areas where you have the Zoysia Grass invading, but it will also kill anything it comes into contact with.
Answer last updated on: 08/09/2014