When 3D printing, humid conditions and moisture can be a problem and some filaments attract more water than others. This is something you will probably have to seal with sooner or later if your into 3D printing especially when printing Nylons or similar filaments.
Food/Fruit Dryer
There are lot´s of solutions to deal with moisture and drying. I like to keep things simple. I dry all (yes all) my filament in a slightly modified food/fruit dryer and then i store the spools in a resealable IKEA bag with some silika gel. While this works for me i´m sure others have their own way of dealing with this, what´s yours?