There's a pretty detailed description you can find on Morich's website, but I keep it pretty simple. I clean the ball with a Simple Green solution first and then I fill a sink or bucket with the hottest H20 from the tap. I put a strip of masking tape over the thumbhole, then immerse the ball on a ball ring just below the tape. I put a little degreasing dish detergent into the water and soak for 15 to 20 minutes. I then rinse the ball off and wipe off any residual oil. I drain the old H20, rinse the sink or bucket and then refill the sink with hot water without detergent and let soak another 15 to 20 minutes. This removes most of the oil that has soaked into the ball. Once a year, I will also have the ball resurfaced (now I just gotta invest in a ball spinner so I can do this myself).
