In order to remove wallpaper easily, you will need the following: a scoring tool, liquid concentrate, and a putty knife. Score the wallpaper with your scoring tool. Move your hand in a circular motion. The scoring will allow the concentrate to be absorbed. Spray the wall with the wallpaper stripper concentrate. This will dissolve the glue. Coat the wall well. Allow the solution to sit for 15-30 minutes. Begin removing the wallpaper at a seam. Slip the putty knife between the wall and the seam. This will free the wallpaper. You'll be able to peel it off the wall, as you would peel a banana.