Doff Weedout Extra Tough Weedkiller Concentrate contains 90g/l glyphosate in a soluble concentrate. A systemic herbicide that kills the foliage and plant roots of unwanted vegetation. Weed control is initially seen as a yellowing of the leaves which die back after a few days or can take up to 4 weeks after application. Each pack contains two 80ml sachets which are to be mixed into 800ml of water to treat over 30m² FOR USE ONLY AS AN AMATEUR WEEDKILLER To avoid risks to human health and the environment, comply with the instructions for use. READ ALL INSTRUCTIONS BEFORE USE Specifications Kills weeds & roots Suitable for a broad range of weeds Systemic weedkiller for the control of annual and deep-rooted perennial weeds, including grasses, docks, nettles, willow herb, dandelion and many more For use on and around paths, patios, driveways and other hard surfaces in your garden Contains 90 g/l glyphosate in a soluble solution Two Sachets per packet - each soluble in 800ml of water to treat over 30m² Dimensions: D 5.5 x W 13 x H 19 cm