Our help desk is constantly checked for service request. It is recommended to clean your input and output devices from time to time. Dirt on a scanner's scanning area can affect the scanned images' quality. Toner, liquid, or dust can affect the quality of printed images. Dirt can affect or destroy a keyboard.
Dirt can cause a mouse to behave erratically.
Dirt can propagate on a monitor, making it hard to see your work. Check your equipment manuals for specifics on how to clean your equipment. All we are saying here is that it should be done for optimal computing quality.