Stoner 92164 Invisible Glass for Window is a popular window cleaner product in Canada and the U.K. The maker claims the product can wipe many kinds of dirt off with easily such as bird dropping, bug, oil, grease, tree sap, the glue of plastic and so on.
We had a chance to test this product with our car, house glasses, and some kitchenware. The quality was good as described by the maker, we could clean off the glue of the sticker on our new kitchenware within first wiping. The car windows were contaminated with bird dropping and other dirt. It could be purged without much effort. We just rinsed and cleaned with water first then sprayed this product on the residue and wiped it with a microfiber towel. It was cleaned and gave us very clear visibility.