I would love to read the answers to the question on how to secretly kill a tree (among other answers). Our neighbor has one that is dropping stuff all over our yard that starts little trees. Even if yo can catch them at just a few inches tall, the roots are s0 long. They get much bigger and you are digging out and you have to dig down a ways and hope you can get the root or just dig way down and cut. This has been costant since we moved in 10yrs ago.