Yes, disposable non-woven caps can be used in sterile environments. They are designed to meet the requirements of such environments and help maintain sterility. These caps are typically made from sterile materials and manufactured in a controlled environment to minimize the risk of contamination. They are worn by healthcare professionals, laboratory workers, or individuals in cleanroom settings to prevent the shedding of hair or scalp particles that may carry contaminants. By using disposable non-woven caps, the risk of introducing foreign particles or microorganisms to sterile areas is reduced, ensuring the integrity of sterile environments.