**Not a discussing about their effectiveness**
Could unsanitary cloth masks worn throughout the day actually contribute to transmission? People will take them off and place them on a surface while eating and adjust them throughout the day. This seems ripe for some unintended consequences. I couldn't find any reliable sources on how long the virus can live on cotton surfaces, but for a porous surface like cardboard it's 24hours.
https://health.clevelandclinic.org/how-long-will-coronavirus-survive-on-surfaces/
Could unsanitary cloth masks worn throughout the day actually contribute to transmission? People will take them off and place them on a surface while eating and adjust them throughout the day. This seems ripe for some unintended consequences. I couldn't find any reliable sources on how long the virus can live on cotton surfaces, but for a porous surface like cardboard it's 24hours.
https://health.clevelandclinic.org/how-long-will-coronavirus-survive-on-surfaces/