Non-sterile gauze is a cloth medical dressing that has not gone through a sterilization process. Because it has not been treated, non-sterile gauze should not come into direct contact with open wounds. It is best suited for closed wounds, to keep bandages in place, or to cushion bruises. In these applications, non-sterile gauze is a better option than sterile gauze because it is less expensive. Express Medical Supply offers non-sterile gauze in the form of bandage rolls and gauze sponges.