I get shake like that and bud on occasion .I've honestly only noticed humi packs on the middle shelf and above . It really depends on the brand . I will say if it comes with Those packs though your prolly paying a little more than u want to. ultimately those packs are the whole secret . Shit you could even get a cigar humidor and it'll do the same thing for ya . Wine fridge ect... It's the same thing with spices in your kitchen ,good for however long there stored in a dark cool sealed condition . But the moment u leave those spices drying out the terpenes decrease and the spices are no longer as desirable because the flavors lost. With weed tho at least with me there's still use even if dried out I'm still gonna smoke it. Still gets me high .but the flavor is what changes. So I guess what I'm trying to say is that when storing weed its all up to the user on when they wanna consider the shelf life expired. For some they focus on flavor and moisture. And some only care about THC content. I personally have daily smoke that just gets me buy. Then I usually have a top shelf bud that I chose solely for flavor and terpene profile (this stuff I pamper like fine wine). The shit I'm smoking to get by I'd let sit around alot longer in worse conditions with less care.