Usually instructions are to leave them alone until they fall off the wound. By that time the skin edges should have had time to heal. Staples are often used on long lacerations, particularly on legs or arms. They can be put in quickly. Studies have shown that they do not cause any more of an inflammatory reaction to skin than stitch thread.
Staples have to be removed just like stitches do.
There is a special tool that is used in the Emergency Room to remove them. People usually do not complain of a lot of pain with the removal of staples. Less chance of infection A smaller scar. Any cut will leave a scar. Stitches involve a repair to insure the smallest and least noticeable scar.