Resolva Pro Xtra Tough Concentrate is a tough and effective total systemic weedkiller. It kills weeds and roots of annual and deep-rooted perennial weeds including Nettle, Thistle, Bindweed, Dock, grasses, Bracken and many more. The advanced breaks down naturally and leaves no residue in the soil, and is rainfast in 6 hours. Controls annual and deep-rooted weeds Systemic action kills the roots Ideal for clearing large areas Super strength for maximum coverage Kills tough weeds including Nettle, Thistle, Ivy, Docks and Couch grass Coverage: Up to 500m² How to Use: Always read the label fully before use. Use on a calm day when weeds are actively growing and have a large leaf area to absorb the weedkiller spray. Rainfall within 6 hours of application may reduce effectiveness and require re-treatment. Kills most weeds with a single application but some tough weeds may need a retreatment. Effects on some weeds will be seen within a few days, other tougher weeds m