Oh, btw, if you keep it in your fridge it will last longer. Slows the bacteria down from multiplying and going through their food. I think its good for like 6 months after you open it based on what the back of the container said, but you need so little of it, I don't see how you could ever use that much, unless you decide to spray your yard with it like they suggest. I did. Plus I use it as a foliar spray on pretty much everything, including my blackberries and peach tree. All it does is just out compete other bacteria, and since they aren't dangerous, make you sick, or cause any rot, it keeps all the other nasties away by out competing them, with no side effects.
This is what MOG had to say about it awhile back:
