As a sidenote:
For many years, I needed to frequently run my Centenials though the polishing machine every couple days if playing frequently. Aside from the chalk marks (Tweeten/Master), you could always tell they needed cleaning by the way they dragged as you pushed the rack into position, and BTW I also kept the cloth very clean.
I recently/simultaneously had the table recovered (new 760, though it plays more like 860), bought a new set of Duramith balls (red circle CB) and switched to Taom chalk. After nearly 2 weeks of constant play (Covid-19 self-isolation), I haven’t YET needed to clean the table or balls. The few miscue marks on the cloth are of no real consequence, and very lightly brushing the CB on my shirt whenever I pick it up has kept it spotless. The balls still slide into racking position like they were freshly polished. Go figure.