I agree totally on the use of Roundup, but sometimes you have to do it to get rid of something like this. Having something growing into a drain field could end up costing you big bucks to fix, so this was a great way to fix that problem. I'll give this a try the next time we're at our house with the trumpet vine. I'd have to rip out a huge section of the yard to get to the roots, and I'll try anything first!
