Quoted from gweempose:If the pin was in a smokey environment for a long time, there is probably a yucky film that has built up on the outside of the cabinet. I would recommend washing it with a gentle soap and water solution. I've also seen people recommended a product called Simple Green.
Also going over the cabinet with Novus 2 the same as you would a PF removes all the grime and leave a very nice shine, will make your cabinet art look new again