Does 3 D Printing Filament EXPIRE Cheap Food Dehydrator Tested

I have been skeptical about filament drying for some time, so I decided to test several old spools to see if they 3D Print after years of and if they can be revived with a cheap food dehydrator Models used: GayerAnderson Cat Bucket O Octopodes (thicker legs) Food Dehydrator (amazon affiliate) Food Dehydrator I used (Aus o