Top critical review
Reviewed in Australia on 21 September 2020
No carbon granules in these inserts - activated or otherwise. Cutting one open revealed a wisp of gauzy, almost transparent fabric, colored grey. Carbon may have been used to color it but if so the amount would have been miniscule. Its effectiveness, I'd guess, would be zero. It was certainly not what I expected to find in an insert advertised to contain activated carbon.