Sterilized Wood Sticks Cotton Swab Wound Care Cotton Buds Pack of (100 NOS. ) Extensive usages: versatile tools for cleaning, detailing, and drawing with paint, glue, also can be taken for model making, ceramic rocks, jewelry, fabric, and crafts, multi-functional tools Free from bacteria or other living microorganisms. Common methods for sterilization include autoclaves, ETO (ethylene oxide gas), and Gamma irradiation. Sterile swabs are generally used for biological sample collection to avoid sample contamination, and for medical use to avoid infection.