NEW Yates Zero Triple Strike Professional Weedkiller Concentrate is a glyphosate free, systemic garden weedkiller. It is both a contact and systemic weed control product that effectively controls a wide range of weeds and grasses. It penetrates the weed tissue, accelerates cell disruption and terminates weeds, roots and all. Results are seen as browning and wilting leading to plant death. 5L concentrate makes up to 125L of spray. *Visible results can take longer than 24 hours on certain tough weeds or weeds in shaded conditions.