It's like almost anything with an expiration date - it just cannot be guaranteed after the date. If the package is vacuum packed and is still sealed tight I would it is fair game for 6 months to a year after the date.

Remember it's not like today it's good and tomorrow it's bad, it just does not work like that. But just about everything must expire at some point. If you want to hold on to it give 6 months, but start thinking about replacing it, yes with Combat Gauze.

If you are serious about treating yourself or others, $50 every 3 years is not a lot to spend for proven treatment (provided you use it correctly)

Stay Safe!!