We inherited a grove of 40-foot-high Ailanthus when we moved into our home 9 years ago. We cannot deal with the large trees, due to their large number and proximity to structures a fallen tree could damage. Our goal has been simply to contain the spread of the plants. We snip the young sprouts or trees and paint the cut edge with Bonide StumpOut which has triclopyr. However, we have not stopped the spread of the plant. I am wondering whether painting the cut edge delivers enough poison to be effective, whether we could be doing something else or something different. Also, there is far too much work for us to do ourselves, and we would value advice about how to locate affordable or voluntary help with the poisoning.