<human>: Goal: To clean old CDs that are scratched and dirty so that they continue to work,

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

OPTIONS:
- rub the CDs with toothpaste, a clean rag and cold water afterwards.
- spray the CDs with bleach cleaning spray and then rub with paper towels;
<bot>: rub the CDs with toothpaste, a clean rag and cold water afterwards.