Filters have limited using life as well. But if you have an out break of something even just the flu, you are going to need something to clean up with that’s antibacterial and antivirial to stop the spread. Your water filter can do that.
The problem is as your thread suggests, chlorine has a limited shelf life. Other cleaners do not, and if I don’t need chlorine for water, then I don’t need it at all.
“Filters have limited using life as well.”
No really. The filters I use have an indefinite shelf life and a long life span, both the hand pumps and the RO models. I am trying never to rely on something that is difficult to get, keep, or use. Chlorine is one of those items.