Some people do have problems with molds in the clays but it's not that common. I have run into really smelly clay in the recycling buckets. I put some bleach in the bucket and the smell is goes away. -Numo At 03:42 PM 3/2/02 -0600, you wrote: >>>> I always thought mold was good in clay. In fact in China ,I heard that they ( in the past) had buried clay for many many years and that clay was treasured. When I have opened bags of new clay I have found mold. I do not think it is that big a deal. Numo- where are you? I know you will know the answer to this one. MaryB ---