t is not recommended to use it on unstable Paint Walls?rough walls, powdery walls, wet surfaces or uneven surfaces. Ensure that the contact surface is kept clean and dry. After use -- Press down hard and hold for 20 seconds after sticking, to make the adhesive tape fully contact with the surface,this will help maintain long-lasting stickiness Using hot air from a hair dryer will soften the tape and make it easier to remove.Then you can use a sharp tool to slowly lift the tape from one side and then slowly peel the tape off the surface of the objectour tape is very sticky,avoid causing the wall surfaces to fall off when removing tape