I’ve seen many debates about the need to dry PLA filaments. Looks like some people never need to do anything while others dry the hell out of them before printing.
I’ve been recommended once to print at 10% RH… After 48h of drying, I can barely get below 37%…
So: what’s the humidity level in the room your printer is?
You have to be careful with this. The humidity reported by the local weather station may not be the same as the humidity in your storage room.
I have just gotten an airtight box and a few packs of silica gel and store all my filament in there.