When clicking on the sort for "balls" in the billiards section, the top of the page has some interesting information.
Here is how Ebay says to clean your billiard balls!
Fill the tub with a full cup of water and a full cup of bleach. Clean two balls at a time in the solution for good results. Remember to put your gloves on and roll both balls around in the solution for three minutes.
Once you rinse each pair of balls, wipe them with the magic eraser. You should see a dark-colored film appearing along the front end of the eraser. And, the balls becoming shinner within seconds.
Thoughts?
Here is how Ebay says to clean your billiard balls!

How do you clean a pool ball set?
Billiard pool balls are durable, but they are also prone to staining, especially when subject to unclean surfaces or chalk. It is relatively easy to clean billiard balls. All you need is a magic eraser, a sink, a bottle of bleach, a pair of cleaning gloves, a dishrag, a 16-oz cup, and a tub.Fill the tub with a full cup of water and a full cup of bleach. Clean two balls at a time in the solution for good results. Remember to put your gloves on and roll both balls around in the solution for three minutes.
Once you rinse each pair of balls, wipe them with the magic eraser. You should see a dark-colored film appearing along the front end of the eraser. And, the balls becoming shinner within seconds.
Thoughts?