Mar 19, 2020 - 05:11 AM
Once diluted with tap water, the active ingredients begin to slowly degrade. Think of it like this - Day 1 - 100% effective, Day 2 - 98% effective, Day 3 - 95% effective. I am not sure exactly how long it will last at a toxic enough rate to kill viruses, but from what I have been told, it will last about 1-2 weeks at a rate toxic enough to use. After that the effectiveness falls faster and by 3-4 weeks it is not toxic enough to use. Hope this helps.