A FW repair man recommends Safeguard soap, 1/2cake, still in the box for deodorizing. I put mine outside on sunny days. Sun seems to help the most. When the machine is out of the case, charcoal briquettes, well protected. Otherwise, they mail soil. Some have said Lysol spray, but that causes wetting, so follow with sunning, quickly. I don't carry my 301 in the case because it is too heavy for me.