Meg's clay kits give you a little black box for holding the clay...works perfect for storing the clay in a liquid bath, though some here have said storing clay in lube is pointless.
I recently used some Griot's clay that was at least 8 (yeah, *eight*) years old. It wasn't even unopened either. It was perfectly OK. I've stockpiled enough Smart Clay to last me for many, many years and I'm confident that it'll stay good.
I've simply *never* had a problem with clay drying out or otherwise going bad..*except* when I've stored it in lube/QD/etc., which IME does more harm than good.
