Knick'n'clean is a product that kills bacteria, molds, viruses, and fungi in refrigerators to keep foods fresh longer. It contains an active ingredient that has been used for over 50 years to disinfect drinking water. To activate it, the glass inner tube is bent, mixing the fluids and creating a disinfectant that diffuses through the refrigerator over a month. It can kill over 99% of germs and bacteria, helping foods last longer while reducing energy use and environmental pollution.