I found it to be very ineffective on bowling balls. Water and elbow grease work as well. I still have my original bottle purchased in 2003 or thereabouts. I find it effective on woodwork (not kidding).
PLEASE NOTE: there is another bowling ball cleaner, also called, "Ultra Clean", made by Tenth Frame. It is great BECAUSE it contains acetone. Because it contains acetone it is TECHNICALLY illegal to use and it is not permitted by the USBC. It is on their list of "Not permitted at any time" products.
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"None are so blind as those who will not see."
Edited on 9/6/2006 3:52 AM