I purchased some ICs recently that included something I'd not seen before - a moisture 'sensor' on a paper strip with color indicators for a few specific levels of humidity. Once the paper reaches a given moisture level, the color on the paper changes color. If that level is reached, it recommends baking the IC.
This prompts two questions I've not yet found answers to:
1.) I've rarely, if ever, had problems with static/ESD breaking ICs. Chip manufacturers are rightfully very cautious about ESD when shipping their products. Here on ee.stack I've seen discussions regarding ESD with most answers approaching, "don't worry about it that much." Is this a similar scenario - where I could just blow off the warnings and still have a working IC without baking the IC after reaching that recommended moisture level?
2.) Assuming I do need to worry about it - After I've built my product, do I still need to be concerned about the impacts of these small amounts of humidity on the IC? In other words - do I need to use a moisture-resistant housing in my product's case to manage humidity (this is something that could be used in multiple climates.)
Thanks in advance.