We&#39;re sorry to read about your disappointment with Roundup Weed &amp; Grass Killer4 with Concentrate Refill and appreciate your feedback. <br /><br />Even though this is a non-selective weed control, some weeds, like weeds with a waxy surface, are more difficult to control. 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. While weeds will begin to wilt within hours after an application, a complete kill may take 1-2 weeks. If needed, this product can be reapplied after 28 days. <br /><br />We want you to be confident in our products. For this reason, we offer a product guarantee. If for any reason you, the consumer, are not satisfied with the results after using this product, you are entitled to get your money back. Limitations apply. At your earliest convenience, please reach out to us at 866-324-2647 if we can further assist.

We&#39;re truly sorry to hear that you were disappointed with Roundup Weed and Grass Killer4. We appreciate you taking the time to share your feedback with us.<br /><br />Wand Extension: Ensure the wand is completely extended into the open position. It should click into position when fully extended.<br />Nozzle Position: Check if the nozzle is turned completely to one of the three &#34;on&#34; positions. If the nozzle is positioned between settings, the sprayer will not work correctly.<br /><br />We want you to feel confident in our products, and your satisfaction is important to us. That&#39;s why we offer a product guarantee: If, for any reason, you, the consumer, are not satisfied with the results after using this product, you are entitled to a refund, with certain limitations applying. Please reach out to us at 866-324-2647 at your earliest convenience if you need further assistance.