Roundup Biactive 5L is a professional standard, foliar-acting herbicide with a triple strength formulation that has proven reliability and performance. It controls annual weeds and perennial grass, and broad leaved weeds in non-crop areas. Using a patented blend of surfactants, it ensures optimum leaf uptake for improved weed control. It is rain fast in three hours for annuals, and in six hours for perennials. It is designed to be low-foam in a no-glug bottle for faster and easier use. Dilution rates very from 30 to 60ml per litre of water.