What if there is mold or some other fungus growing on my log?
Small shelf fungi are common. Apply rubbing alcohol to the wet or dry log, and then scrape off the invader gently. Don't use bleach or fungicide.
White fuzzy fungus is shiitake mycelia. If it's on the bark, it is caused by too much humidity, sometimes from being in the bag or box too long. Shiitake on the ends of the log means the log is ready to fruit. Shiitake may grow over the ends to seal the cuts. The mycelia will dry and can be peeled off, if desired. It will not interfere with fruiting.
Green mold: The log is too wet. Put alcohol on it and let it dry.
