Shoot, really? I've got Tupperware going back 40 years, if not more....and dang-it, I just organized all of it! Now you're telling me I've got to dump it...sigh.

How far back is "too far" to be safe? I probably have a piece from every set starting a decade ago, back to 40+ years.

Or is it one of those things where I should just move them to the garage/woodshop and start using glass containers?