Doff Path and Patio Weed Killer is a ready-to-use formulation that effectively treats weeds and grasses growing between paving slabs, reaching right down to the roots. It's suitable for use on paths, patios, and gravel. The trigger spray pack provides convenience, and the weedkiller is biodegradable, not staining or marking paving. It contains 7.2g/l Glyphosate in a ready-to-use solution and controls annual and deep-rooted perennial weeds.