True story - I just used this principle to re-org my closet, a perfect pandemic thing to do. All the most recently used, still-clean-enough garments are placed at the end easiest to reach, the level one cache. Rarely used items are at the other end, the long-term storage, while in between is the L2 cache. On laundry day the L1 cache gets flushed...

Alternative method - how about putting the masks in a box with an ozone generator? Comments?

Dangerous and it degrades them.

This is a project based in Ireland. For a similar US-based project, see https://www.projectopenair.org/