CD Treatment


I read recently on a thread here that there are ways to treat CD’s so that they sound better. What are some of the easier treatment methods that you’ve tied that have worked?

My CD player is an old Simaudio Supernova with front loading tray.

I have about 1500 CD’s

Thanks
fundsgon
Thanks guys, I’ll check that’s it’s level and try a green sharpie. If I were to treat myself before every listening session my liver would soon disappear, so I guess it’s just sit back and enjoy.
Novus Plastic Polish 2 applied gently in a vertical motion and gently removed when dry.
Post removed 
Post removed