Our multi-functional door and window self-adhesive residue-removing cleaning agent contains organic solvents, surfactants, additives. It quickly removes sticker residue from doors and Windows and is an essential cleaning tool. Its use method is very simple: 1. Spray an appropriate amount of this product on the glue residue. 2. Wait a few minutes for the glue to dissolve. 3. Gently scrape off the remaining solution. 4. Wipe off with a damp cloth. The smell is not pungent and will not give people an uncomfortable feeling. Easy to use, just spray and wipe to make the surface clean again.