I wonder if this should be reported to the government (btk). From my understanding if a pesticide like chemical is produced that is regulated then it has to be listed/registered/etc. If a natural known pesticide is produced (let's say tea tree oil) that is not regulated then it doesn't have to be listed so it would depend on what is produced by the bacteria. In the case of Vibrant, even if it was bacteria producing the algaecide, the resulting chemical is epa/government regulated.I would still condemn them for doing what I was suggesting but I thought it would explain the ingredients list on the bottle. I used btk as an example because in Canada the ingredients list the bacteria but not the insecticidal proteins produced by the bacteria, it is sold as an organic approved biological pesticide with none of the normal pesticide regulations. I'm not a chemist I was just using a precedent from horticulture as that is my field. I brought this up to further my own understanding on the subject not to convince anyone of anything. I understand how the theory I broached does not apply after that discussion. I do apologize if I offended anyone that was not my intention nor is it my intention to defend UWC.