Tordon RTU Herbicide Ready To Use Brush And Tree StumpBy Clark Elliott on 4/6/2016Very effective stump killer. I use a small sprayer that you find in the travel section of Walmart cosmetics. (Fits nicely in a basket on my ATV!)I adjust the nozzle to generate a light yet relatively coarse spray. I spray the Tordon RTU on the outer edge of the freshly cut stump to wet the cambium layer. All done!