From what you've posted there, thats not bacteria in a can. Its the stuff the bacteria feeds off, so it may help the cycle but not instacycle it.
The staff said that there WAS bacteria in the can, and that ammonia and nitrite were in there so that the bacteria could feed.
I agree that I've heard nothing positive about bacteria in a bottle, but this fridge kept stuff intrigued me. Just wanted to know if anyone had used it and if any degree of success was had.