Agri Star Clethodim 2EPrecautions and Restrictions: Do not enter or allow others to enter the treated areas until the sprays have dried. Rainfall within 1 hour following application will reduce effectiveness of grass control. Grass herbicides generally require a spray additive, Crop oil concentrate or a non ionic surfactant to improve control For spot applications: apply 0. 1 0. 2 ounces per gallon of water For Broadcast applications on ornamentals: apply 8 16 ounces per