like any bowling ball I would say.

use a spray cleaner etc. after each training session (or 6 games)
wipe the oil off after each shot

from time to time make a deep clean with a hot water bath...

that should do the trick to keep the ball clean for a long time
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"Have fun and bowl well!" - Grayson
"Some things are made so even idiots won't fail using them.... But I ask what about the genius?" - Grayson

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