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Tonightm01 2 points ago +2 / -0

Again, all types of masks are useless after a few hours. No matter the grade.

It's one of the reasons hospitals go through so many of them. They get wet over time and the particles travel on the moisture.

They can put them into special ovens. One to kill germs and to dry them out more than anything.

It's not so much if you wear them. Its more the fact places are asking workers to wear one or two all day.