I just use Dawn dishwashing soap. Make sure you give the knife a thorough rinse and then dry it off. You may want to blow hard into the pivot to push out excess water or even take a hair dryer to it. When the knife is dry, add some lubricant (ie. Tuf Glide) to the pivot, work it in and then let it sit overnight. Works on all of my lockback Spyderco's.