Weedol ultra tough weedkiller is a 1 litre ready to use weedkiller which is designed to kill brambles nettles thistles docks and other deep rooted weeds it has a systemic action which will permeate the roots so that the weeds wont grow back any solution that lands on the soil is degraded by micro organisms to allow replantingits a ready to use formula so to apply simply pull the trigger to spray the weeds this is best used in dry and non windy conditions to prevent the formula being wa