Yeah, moisture is a pain, and another rabbit hole. In short, you can't trust packaging, even when sealed. They often have a lot of moisture before they are sealed, regardless of brand. You can print with a roll to test before printing, but I finally gave up with that and the desiccant methods. The issue with desiccants is that they are only good at stopping additional moisture. That is important, but once the moisture is there it is just there. The only way to get it out is sticking the roll in an oven or food dehydrator at ~50c for 8-12 hours or so. This is a preparation step before I print anything now, even though I keep home-made desiccant packs in the rolls in storage containers.