I use fairly "hot" water and liquid dish washing soap, along with an old, soft toothbrush. The reason is that the shop does such a good job of covering the blade (for prep and shipping) that I need to scrub around the hilt a thumb notches to remove it. You have to guard against getting too much hot water and soap on the handle. It will knock off the nice polish...
Best, Capt. Chris
PS: Jerry: I think I sent you an email...Let me know...CCS