Doff Path & Patio Weedkiller Ready To Use is a highly effective glyphosate based weedkiller. A systematic weedkiller for the control of annual and deep rooted perennial weeds such as grasses, docks, nettles, willowherb, dandelion and many more. This ready to use weedkiller does not need diluting and will kill most weeds down to their roots with just one application. It comes in a one litre easy to use spray bottle which treats up to 30 square metres of unwanted vegetation.