These Knife Killers posters and prints are great for decorating your room or office. To use them, simply find a nice spot on the wall and hang them up with nails or adhesive strips. Make sure the surface is clean and dry before hanging. Avoid exposing them to direct sunlight for long periods as it may fade the colors. To clean, gently wipe them with a soft, dry cloth. That's all you need to do to keep these posters and prints looking their best!