Final answer:
The forehead and cheek rests of a device should be cleaned with mild soap and water.
Step-by-step explanation:
The forehead and cheek rests of a device should be cleaned with mild soap and water. This will help remove any dirt, oils, or bacteria that may have accumulated on the rests. It is important to remove the rests from the device before cleaning them, and to allow them to dry completely before reattaching them.