Not sure how it is about taking goo off, but for cleaning up old machines in general, I like those Magic Erasers from Mr Clean. I haven't looked into the ingredients, but whatever's in it, they hit the nail of the head. If you have some machines that have marker writing in stead of an asset tag, this might take it off. For me, it's worked in some cases and not others. It will take those general hard to remove scuffs off also. I start cleaning new machines by first scrubbing them with baby wipes, then a magic eraser.