Boise Schools District issued one special band mask to each band student this year. Many students leave their band mask at school in their instrument case. If your student brought his/her instrument home for Thanksgiving break, grab their band mask and give it a good wash especially if your student has a tendency to leave the instrument at school.
One parent went well into November before remembering to grab the mask out of the instrument case on the rare occasion it got brought home. This what roughly 10 weeks of filth and dye (from a new mask that had never been washed) looks like.
Students are wearing these on their faces every day to band class.