EXYLON ORION HERBICIDEEXYLON ORION HERBICIDE is a crop protection product from Exylon Pesticides with Oxyflourfen 23. 5% EC. It is designed to help farmers manage target crop problems with reliable field performance when used as directed. Key Benefits Herbicide: Provides powerful pre emergence and early post emergence control of broadleaf and grassy weeds. Shield: Creates a strong chemical barrier on the soil surface that destroys emerging weed seedlings upon contact.