Weedol rootkill plus weedkiller tubes contain 8 tubes of liquid concentrate weedkiller which are designed to kill broad leaved weeds and grass it has a systemic action which will permeate the roots so that the weeds wont grow backdilute by simply removing the tubes cap and adding to water and apply using either a watering can fitted with a fine rose or a garden pressure sprayer no measuring no mess for use all around the garden but not for use on lawns unless the user is intending to ki