You do know what an Eco-system is, don't you? Where things are linked in non-obvious ways, and changes almost certainly initiate other changes.
This silver bullet mentality is prone to disaster. The bacteria may evolve, starting an arms race, leading to stronger bacteria, or possible fragmentation that makes management or synthesis time-consuming, difficult or may strengthen other nasties.
Do you really know what the impacts are likely to be? I'm sure you don't, which is why caution is essential. Flippant "silver bullet" speculation not-withstanding.