www.youtube.com/watch?v=6tHInlFfMcM

copy of the video description text:

Over the years, I’ve collected a lot of silica gel packages and regularly put them into my stuff, hoping that they will keep it dry. These tests showed me that there is more than silica gel in the typical desiccant packages and that if you don’t properly dry them, they can even ruin your filament. Let’s compare four different methods to keep your loose desiccant and your silica packages dry! Chapters 00:00 Introduction 01:19 What’s inside a desiccant bag? 01:54 Sponsor 03:19 Clay desiccant 04:57 Indicating desiccant 06:53 The problem with desiccant 10:26 Get rid of your desiccant bags? 11:06 Drying desiccant 14:38 Drying in a microwave 16:40 How much energy does it use? 19:34 Drying the bags in a microwave 21:48 Do you damage your desiccant in the microwave? 23:18 Summary

I’m surprised Stephan did not mention that bentonite clay is commonly used for cat litter.