Skin oils, fingerprints and scratches on the disk must be avoided. CDs should be removed from their cases carefully. A good technique is to place the container on a flat surface, push on the hub with your thumb or forefinger while lifting the CD gently with your other fingers. Dust can be removed from CDs with a soft, lint-free cloth by wiping them in a circular motion from the center to the outer edges. Dust should always be removed from disks prior to use.
Several manufacturers offer cleaning kits.
They should always be used in strict conformity with their manufacturer's instructions and should be used only when there is evidence of contamination. Food, spilled liquids and smoke particles can contaminate or otherwise damage CDs. Eating, drinking and smoking should be prohibited in all areas where CDs are stored and used. Boiling water or otherwise creating water vapors must likewise be avoided. Physical distortion should be avoided.