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Here's a screenshot from their website friend.

Screenshot_20220827-172831.png
It even says it will eventually break down so if that happens in time hopefully it willhave drawn in enough dirt to clog it...but if not, well I have 5 gallons of it, so ill just treat it again.😁

Yup seems legit! You may wind up needing to give it a few treatments either way so having extra will assuredly be handy one way or another.