Is there any good way to effectively remove small advertisements posted on security doors?

In recent years, although all kinds of psoriasis advertisements have disappeared in the streets, they can still be seen frequently in some old residential areas with no property or loose property management. Some are posted on the wall, and some are posted on the security door. There is no need to control the position of the public on the wall, but it is not easy to do small advertisements posted on your own security door.

Small advertisements on security doors are generally all kinds of stickers, which are difficult to remove. There are generally the following cleaning methods.

1 Use a shovel to clean quickly, but it is easy to damage the paint on the surface of the security door.

2. Soak in alcohol or paint thinner (available in hardware store) to remove bubbles. Generally, it is sprayed on the adhesive surface with a small watering can, which is easy to remove after the liquid permeates, and the alcohol effect is slightly worse. The self-adhesive effect of surface film mulching is discounted.

3. Blower heating, whether it is self-adhesive or transparent glue, is afraid of heat. Once the temperature is high, the cohesiveness of the colloid will be reduced, and it can be removed after being heated by a hair dryer.