Yeah you'll need a special solution and some pads, how did you manage that!?
Can you not get it professionally cleaned better to get someone who knows whst they are doing instead of making it worse
Cotton bud, with some pure alcohol on it and a very gentle gentle wipe a few times.
errrr no....
Pec Pads, eclipse fluid and nothing else.
Clearly the only thing that will shift that is baking powder and a brillo pad....