Originally Posted by Danielflading
I would use house hold bleach, not pool products. Not sure what else is in them and they are not really intended to treat drinking water.
Clorox works good!
The shock is better than Clorox or bleach. There is other "stuff" in bleach that are not good for you. Bleach is primarily a cleaning product whereas shock is meant for human contact and even possible ingestion. If you check any "survivalist" websites, shock is the go to product. By shock, I mean the product with the long name Brianb cited.
FYI, bleach has a shelf life of a year or so, shock has a 25 year plus shelf life.