Grammie, try using a warm blow dryer on your cartos first. No goo to speak of this way. The heat melts the glue and the plastic peels right off the carto nice and clean. Leaves behind almost no residue at all. A little alcohol wipe up and you are done. Super fast and easy!

I was trying to catch up and then I saw your post
You must be jumpin' around all over the place! 