Norwex harness the physical power of our microfibers and water alone to easily and throughly clean surfaces. Mechanical Clean versus Chemical clean. You get an immaculate clean while radically reducing your use of harmful chemicals that affect your family's health. Norwex MicroFiber products containing BacLock self-purify within 24 hrs when wet! BacLock micro silver antibacterial agent is embedded in the cloth self cleans it!