Did it rain within 4 hours of the application? The product could have been washed off the weeds.

Has it been at least 14-28 days since it was applied? While visible results may be seen after 24 hours, it can take 14-28 days to kill the weed completely. Check for yellowing or browning of leaves.

What is the target weed? If the weed is not listed in the label directions, the product may not control it.

What was the average temperature when the product was applied? Weeds may have been dormant if temperatures were cooler than 60°F or warmer than 90°F. Cold nights may delay the results.

Are the weeds drought-stressed? Drought-stressed plants cannot readily absorb the herbicide. The label instructs to water 8 hours before and 8 hours after application during dry conditions.

When was grass last mowed? Mowing 2 days before or after application reduces leaf surface and the plant's ability to absorb the herbicide.

Product applications are most effective in Spring or Fall when daytime temperatures range from 60-85°F (15.5-29.4°C). The product can be used whenever the weather is warm and weeds are actively growing. For optimal results, apply during warm, sunny weather. For stumps, the best time for application is late summer to fall, ensuring the stump is actively transporting nutrients. This can be done as long as temperatures remain above freezing and the ground is not expected to freeze within a few days. If reapplication is needed, you can reapply 30 days after the first application, with a maximum of 2 applications per season. If you are still not satisfied with the performance, contact us here.