I would like to cut a bunch of young saplings at about 8" up from the ground. Then immediately apply poison to the cut portion hoping the poison will travel to the roots and kill the chance of any new saplings growing from the roots of the cut sapling. Alternatively I have an Extractigator "Big Daddy" which will use leverage to pull out the sapling along with most of the roots. Should I skip the poison step and simply pull it up by the roots? Also, if using poison is more effective, what poison is best? These are cherry and prune tree saplings mostly.