They’re tough and tenacious and are often really hard to get at. What to do? Get Wilson WIPE OUT Total Weed & Grass Killer with Battery Sprayer. The spray works efficiently with long-lasting effects, killing weeds such as dandelions, plantains and ragweed right down to the roots -- with no regrowth. The battery-powered sprayer can be used to spray large areas or to propel the liquid into hard-to-reach places, making weeding a lot easier on the knees and back. This is the kind of power trip you want to be on.