When I worked in the preschool department at my church, it was important to have the right cleaning chemicals. We had some good ones, but I wish we had some Un-Du. It is an acid free adhesive remover that temporarily neutralizes adhesives but then evaporates. It cleans gum from fabric and works on tape, labels, and windshield stickers. Certainly, it should work well for removing the wake of sticky name tags that many churches have plastered around their facilities.
According to Kevin Kelly’s Cool Tools blog, the original ad for Un-Du featured removing a piece of duct tape from toilet paper and left both intact. Wow!