Pathclear not only kills weeds and roots, but prevents regrowth for up to 3 months (up to 6 months under ideal conditions). Long lasting weedkiller perfect for use on gravel paths, drives and waste ground. This ready to use gun offers a convenient and easy spot treatment. Works best in spring from April onwards, when weeds are small and actively growing. Contains glyphosate, oxadiazon and diflufenican. Always read the label on your purchased product before use.