|that would be melted gum, covered in lint.|
|all over our dryer...|
We watched a plethora of you tube videos which offered all sorts of remedies, most notably "get a dryer sheet wet, stick it to the gum, and then run the dryer and the gum will transfer to the dryer sheet." I doubted that would work and decided to clean it just like I'd clean anything else in my house - with some baking soda and a rag, and lo and behold it worked like a charm. Took a bit of elbow grease, but our dryer is now gum free. Score one more for baking soda!