un-du products (Scrapper's Solution, Adhesive Remover, Sticker and Decal Remover, PhotoCare, Candle Wax Remover and Quickie Gunk & Goo Remover) all were the same product marketed with different labels. The chemical used is N-Heptane. They all are acid free and work to quickly neutralize the adhesive properties of self adhesive items like stickers, decals, pin strips, tapes, labels, and such. This neutralization occurs within seconds and quickly releases the item from almost any surface. There is a caution not to use on 'unfinished' leather products. These products also work well for removing crayon, tar, tree sap and tape residue. They are safe to use on paper, painted walls, furniture, plastics, glass, cars and trucks, photos, film... just about any surface except unfinished leather.
There is a smell until the product dries (literally seconds). There is no residue from the chemical, thus no lingerng smell.
Aspen Shops Online at
www.aspenshopsonline.com used to carry the entire line of un-du products and since un-du quit manufacturing their products, Aspen has a replacement product. It will look familiar, because it's Bestine Solvent (used to thin rubber cement). Bestine is also N-Heptane and will do everything un-du did. The only problem....un-du came with really great scrapers attached to the bottles. Bestine does not, so if you have any old un-du bottles hang on to them to refill with Bestine. Otherwise, you could use an eyedropper to direct Bestine under the edge of your stickers as you remove them.
The best thing about N-Heptane is it works with far more types of adhesives, works very fast, dries fast, leaves no residue or smell and is safe on so many products. It is volatile, flammable, and smells while the bottle is open, but disperses quickly. Use gloves! I saw the MSDS (Material Safety Data Sheet) and it is not harmful to your health (unless you ingest it!).