1. Wet the towel with warm water (hot water should be used in winter), and wipe it twice on the traces of the sticker; then use a warm wet towel with soap, and wipe it on the traces several times; finally Wipe off the soap suds with a clean, warm and wet towel, and the traces of adhesive will be removed.

2. Apply toothpaste evenly on the surface of the sticker, leave it there for a while, and then wipe it with a soft rag. Sometimes there is more sticker and it is stronger, and it is not removed at one time. Apply toothpaste on the mark again and use the same method to remove it.

3. Fengyoujing is also effective. If it is a self-adhesive sticker, it can be easily removed by heating it with a hair dryer.