I don't know the exact make up of the BOW they are treating but IME, Cecil is very right. When you treat large open bodies of water, what ever invasive species you're trying to kill off, always comes back... They found snakeheads in a local pond in MD a few years back. They did a complete kill of it and found several hundred snakeheads. That was a small pond... Then the next year snakeheads were found in the Potomac River. Thankfully the VDGIF and the MDNR were smart enough to realize, they're here to stay and to start studying their impact. Only time will tell how the snakeheads will impact the largemouth bass fishery or native fish. Many are very worried about them destroying the largemouth bass fishery, for one largemouth are not even native to the Potomac and in Japan, the Japanesse are having the complete opposite problem, the newly introduced largemouth are out competing the snakeheads!
