The antibacterial properties of silver have been known for centuries. Its "healing" qualities were already recognised in Ancient Rome, where silver coins were used to preserve drinking water during a time when no scanning tunnelling microscopes existed and there were no modern methods for testing the mechanical properties of precious metals. Yet the Romans were still capable of discerning the effects of silver as a bactericide and fungicide. Today, we are witnessing a revival in the use of silver along with a rapid rise in popularity, and a wide range of colloidal silver products are available on the shelves of herbal drug stores and pharmacies. Nanobakt Ltd. has taken advantage of the opportunities offered by silver and nanotechnology to produce a new generation of disinfectants under the brand name Nanosept.