I only learned of this situation on Monday myself. This is what is happening where I bowl. I cannot guarantee it is the same where you are. They seem like what was described to me as belt marks, but I guess they are different. In any case, Lanemasters cleaner removed both for me.
Not as far as I know. Tenth Frame's Ultra contains acetone. I have found Lanemasters cleaner better than pure acetone, purchased from Home Depot and Lowe's in their paint departments, at removing
anything on a bowling ball surface. That is what I have found. I'll leave your decision of what to use up to you.
Ah, so that is where the glue comes from. One of the houses I bowl has that problem really bad. Lane Masters cleaner will take it off with some work, but there is something better than acetone or Lane Masters cleaner. It's a ball cleaner called 10th Frame Ultra Clean. It is not allowed by USBC for use at any time. LOL But it's the only thing that takes the glue off without serious scrubbing.
The house I bowl at the most is also horrible when it comes to belt marks, particularly on polished balls. No approved during use cleaner I've tried has ever worked. Even stronger cleaners like CnD require major elbow grease. Only thing I've found to work is acetone. Which is on the "not allowed at any time" list.
I'd also be interested to hear how the Magic Eraser did.
I wouldn't use ME on belt marks. I use Lanemasters cleaner (I've found it more effective than acetone) to take off all belt marks and glue from loose carpeting in the back of the pin deck, after league bowling is over. I doubt any cleaner approved for use DURING bowling would remove belt marks.