Hello, Thanks so much! You can wash them with a little bit of liquid soap. However, when I store them wrapped in parchment paper & in their cardboard boxes, usually I don't need to. If I notice that it's a little bit dusty, I do pipette some unscented wax in beforehand, wait for it to dry, then peel them out and dispose of. That way, it gets rid of all the little flecks of dust that may have gotten in them.
