There are many UV technologies currently available, and many more will be introduced. This is because UV is proven to destroy pathogens like COVID-19. Units that use fluorescent or mercury vapor UV bulbs have limited power and wavelengths. Newer technologies use xenon flashbulbs that can generate very high-intensity UV-C in the 254nm~257nm wavelength. These units are usually very expensive, large, and require high maintenance because xenon bulbs do not have a long lifecycle. These technologies have been mainly used in hospitals with price tags starting above $100,000 per unit. Absent vacuum UV, xenon technology cannot generate ozone and does not have the penetrating power of UV-A and UV-B, or the effectiveness of far UV-C from 207nm~222nm.
Popular chemicals include Lysol®, Clorox®, hydrogen peroxide, Max Quat®, and other branded disinfecting chemicals. With the exception of hydrogen peroxide, all chemicals leave residues that require substantial time under various humidity and temperature conditions to dissipate. While many disinfectants are labeled USDA “food grade.” This refers to levels of ingestion toxicity but does not address potential allergic reactions. With the surge in chemical wipe-downs and fogger deployments have come an increase in complaints, workman’s compensation claims, and other unanticipated problems. Issues include eye irritation, nose/throat/lung irritation, loss of taste and smell, nausea, dizziness, contact dermatitis, hair loss, hair color changes, skin burning, and itching. A large number of people cannot tolerate the off-gassing (smell) of chemical sanitizers.