Joe from Tomball, Tx writes
Permethrin SFR 36.8% can be applied to the lawn for treating for sod webworms. You will mix 0.4 – 0.8 fl. oz. of Permethrin SFR in 4 to 25 gallons of water per 1000 square feet. Use the higher rate for fast knockdown and increased residual control. Dense or excessive (greater than 3 inches) lawn height and arid conditions may require higher volume application rates. Repeat application if necessary. Application in combination with compatible surfactants or wetting agents may enhance penetration.
Answer last updated on: 07/10/2017