This is a question with answer options. Goal: How can I get my shoelaces to stay cleaner?

Which of the following methods is more reasonable for accomplishing this goal?

Available choices:
[i] Launder the shoelaces every once in a while with nail polish remover on them.;
[ii] Launder the shoelaces every once in a while with stain remover on them.;...I think the answer is
[ii]