Randy from Milton Florida writes
Do I need to leave it exposed to the sun or can I cover it with more clay?
Killzall Weed and Grass Killer - 41% Glyphosate is a systemic product that can take about 2 weeks to kill the treated plants. While you do not need sunlight for the product to continue working, it would be difficult to know if any plants needed additional treatments if you covered them before waiting to see the results. (If the treated plants are young, then they will start showing signs of wilting and death more quickly.) It is really up to you whether you cover the plants. We do not recommend removing any treated plant matter until the plants have had time to die completely, though.
Answer last updated on: 08/08/2021
