Hi Pam, it's important to let your bannetons dry thoroughly and to brush out excess flour after drying and before storing. This will help prevent mold from developing. If mold becomes an issue, exposing the baskets to direct sunlight for several hours can be helpful, or you can dry them in a 250°F oven for 45 minutes (which will kill the mold), and then brush out any remaining debris. I would set the baskets on a sheet tray in the middle of the oven and keep an eye on them.  For more information on banneton care, check out this article. 

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