Verified answer

You would not have to clean your cards(collectables) had you put them in protectived card sleeves. Other than that, spray a paper towl LIGHTLY with windex, no ammonia and wipe care. Then protect it.

Try to gently use water on a soft towel and clean off the surface. Very light amounts of water so card isnt really wet and doesnt get messed up!

http://hotpokemonhouse.com/

huff at the card and take a tissue/towel and wipe it. i always do that xD. It makes my cards extra shiny :)

soak it in bleach

if that doesn't work, duct tape, lots of it