Experts say that while using brown paper bags to sanitize KN95 and N95 masks might be helpful in certain situations, it is not recommended for health care workers. The reason for this is that these masks require a higher level of decontamination in order to be safely reused. However, for the general public, brown paper bags can serve as a useful tool in maintaining the effectiveness of masks.
To understand how brown paper bags can be used to sanitize masks, it is important to first understand how masks work. Both KN95 and N95 masks are designed to filter out at least 95% of airborne particles, including the coronavirus. Over time, however, particles can accumulate on the surface of the mask, reducing its effectiveness. This is where brown paper bags come in.
The idea behind using brown paper bags is to create a low-level heat environment that can help to kill off any viruses and bacteria that may be present on the surface of the mask. To do this, simply place the mask inside a brown paper bag and then seal the bag closed using tape or a stapler. Next, place the bag in a warm, dry place, such as an oven or on a windowsill. Allow the mask to sit inside the bag for at least 72 hours, which is the minimum amount of time required to kill off any viruses or bacteria that may be present.
It is important to note that while brown paper bags can help to extend the life of a mask, they are not a foolproof method for sanitizing masks. This is because the effectiveness of the method depends on a number of factors, including the temperature and humidity of the environment. In addition, it is important to avoid any methods of sanitizing masks that involve washing or spraying them with disinfectant, as this can damage the mask and render it ineffective.
Overall, while using brown paper bags to sanitize KN95 and N95 masks is not recommended for health care workers, it can be a useful tool for the general public in extending the life of their masks. By creating a low-level heat environment inside the bag, it is possible to kill off any viruses or bacteria that may be present on the surface of the mask, helping to maintain its effectiveness over time.
At the end of the day, the most important thing to remember is that masks are one of the most effective ways to prevent the spread of COVID-19. While supplies may be limited, it is important to take steps to extend the life of your mask and ensure that it remains effective in protecting both yourself and those around you. By using brown paper bags, you can do just that, and help to keep yourself and your loved ones safe during these challenging times.