Resolva Xtra Weedkiller Concentrate is an xtra tough concentrated weedkiller. It is ideal for controlling tough, deep-rooted and broad leafed weeds. Therefore, it is perfect for controlling weeds such as bracken, broad-leaved dock, common nettle and thistle as well as creeping buttercup, dandelion and many others. Furthermore, the formula is also glyphosate-free, therefore it is not harmful to bees. Resolva Xtra is selective and systemic, and will only kill weeds and their entire root, but not grasses. By killing on contact, it therefore acts by desiccation of target weed.