Oh God bamboo haunts my dreams. It was in our backyard when we moved in, creeping ever closer to the house. I wanted to get rid of it to plant native stuff and it was such a battle. I assume it's still under there and is just part of the "grass" now, since the whole lawn is mixed green weeds anyway. But it's gone, has been for a couple years now and we are establishing the landscape, have a food garden and two trees and various plants the pollinators like to hang out in.