Facial coverings and masks should be cleaned at least daily. Cloth facial coverings or masks should be laundered. Surgical masks should be cleaned in accordance with public health guidelines and recommendations. Employees are responsible for cleaning their own facial covering or mask. Facial coverings and masks should be dry before each use.
If a facial covering or mask must be re-worn before cleaning, the employee should wash their hands or at least utilize hand sanitizer immediately after putting the facial covering or mask back on and should avoid touching their face.
Check out the CDC website on How to Wash Cloth Face Coverings