Just cleaned up some old and very dirty corny's with lots of stickers. I was using Bar Keepers Friend and it worked really well with a bit of elbow grease.
I use a heat gun to get the stickers off then the Goof Off to remove the goo.
I wonder what those stickers are on there with because man, that is some sticky stuff!
Jay
i use a 50/50 mix of white vinegar and hot water. peel the face of the sticker off spray the glue let it sit 10 min. use a green scrubbie and all the glue comes right off. works great on wall paper too.