Round up is a selective systemic herbicide (glyphosate) used for complete sward and weed destruction. Roundup and equivalent products such as Rosate, Clinic-Ace and Barbarian can be used to spot spray yards, ditches, under hedges etc, or can be used in a tank mix to burn off grass and weeds prior to re-seeding or harvesting. Its super formulation ensures a guaranteed kill, as the chemical hits actively growing weeds, it translocates right throughout the plant and into the roots, ensuring long term protection. Apply to grassland 7 days before grazing and 7-10 days before cutting silage. Pack size 1,5, 15, 20l (rates vary).