Rootblast super strength tough weedkiller 1 litre is a concentrated systemic glyphosate based total weedkiller requiring dilution with water following application to weeds it moves through the plant and down to kill the roots for the treatment of annual and perennial weeds such as grasses nettles willowherb and dandelions around the gardenwarningkeep product away from children and pets contains 90gl glyphosate always read instructions before use mapp 17940