We're sorry to read about your disappointment with Ortho GroundClearWeed & Grass Killer and appreciate your feedback.If the weed is mature, no matter what weed, it will be more difficult to control. Some harder to control or mature weeds will need multiple applications. Weeds that are moderately difficult to control are Bermudagrass, Bentgrass, Creeping Red Fescue, Hard Fescue, and Perennial Ryegrass. It is important to use this product when weeds are young and tender. To get the best results plant leaves must be thoroughly and uniformly covered with the spray solution. The product can be reapplied in 2-3 weeks.We want you to be confident in our products. For this reason, we offer a product guarantee to our consumers. At your earliest convenience, please reach out to us at 866-324-9192 if we can further assist.

We're sorry to read about your disappointment with Ortho GroundClear Super Weed & Grass Killer and appreciate your feedback.Some weeds, like weeds with a waxy surface, are more difficult to control. If the weed is not listed, it may not be controlled. Also if the weed is mature, no matter what weed, it will be more difficult to control. It is helpful to use any weed control when weeds are young and tender.We want you to be confident in our products. For this reason, we offer a product guarantee to our consumers. At your earliest convenience, please reach out to us at 866-324-9192 if we can further assist.

We're sorry to read about your disappointment with Ortho Groundclear Weed & Grass Killer and appreciate your feedback.To get the best results plant leaves must be thoroughly and uniformly covered with the spray solution when temperatures are consistently between 65-85 degrees F. This product is not systemic, but kills off the top of weeds thoroughly treated at time of application. For annual weeds, especially if young, this will typically kill them. If the weed is mature, no matter what weed, it will be more difficult to control. Some harder to control or mature weeds will need multiple applications: It is important to use this product when weeds are young and tender.We want you to be confident in our products. For this reason, we offer a product guarantee to our consumers. At your earliest convenience, please reach out to us at 866-324-9192 if we can further assist.

We are concerned to hear this. We would like the opportunity to gather some additional information and offer assistance. Please reach out to our Consumer Services team at 866-324-9192 for assistance.