That's why you store it well, and use the Boveda packs. I betcha if I found mine 2 years later it would still workI remember the text I got from my dad. “Hey you got any weed? I hid mine and can’t find it”.
He didn’t find it till 2 years later when they moved
I did that with a sandwich bag back in the day. it doesn't take anywhere close to two years to ruin that.