In addition to the method of glue which?
You can try the following:
1、add a little ammonia and turpentine soap mixed with soap, you can remove a lot of dirt and make the glass surface more shiny (this applies to ceramic tile, ceramic, glass, etc.).
2、with a good sticky transparent plastic sticky tear repeatedly, you can remove some of the surface.
3、with a little letter of sodium and water on the rub off, or thinner with paint can be.
4、you can use dry hair dryer, and then gently scraping on it.
5、with a cotton swab dipped in nail polish wipe.
7、the use of special cleaning agents or sports shoes decontamination cream wipe.
8、4b rubber with a drawing that is very soft kind of Korean eraser can wipe it.
9、if the traces of long-term residue has been hardened, you can first use a hot towel to soften it try again.