Doff Advanced Weedkiller Concentrate is a highly effective solution for eliminating unwanted weeds in your garden. This concentrated formula treats up to 400 square meters with just 1 liter when diluted. It targets both annual and deep-rooted perennial weeds, including grasses, nettles, dandelions, and willowherb. One application kills weeds down to the roots, preventing regrowth. The formula breaks down naturally in the soil, allowing you to replant in the treated area after a short period.