I store mine in a heated vacuum tank. The vacuum drops the boiling point of the water and the gentle heat then causes it to evaporate and condense on the cool lid. I then wipe off the moisture. Rinse and repeat to remove all moisture from the filament. Storing in the sealed vacuum then stops any more moisture getting in.

Printing also means keeping it dry so I have a sealed set up so the only time the filament sees the atmosphere is when it exits the extruder.

I'll take a look at the other filaments, cheers!