It's recommended, for best results, to change the felt filters after 10-12 uses or three month, whichever comes first.
To clean them, it's easy, just rinse under running water to remove any residue and squeeze out any moisture. No need for any soap.
Between uses store in an airtight container in the fridge.
A pack of 2 filters for Toddy Home Cold Brew System.
Toddy code: THMFF12H