emdea22 :
I've gad a logitech optical mouse for about 10 years now and the sensor never needed cleaning even tho its been in some hellish environments. The sensor itself is behind a piece of transparent plastic so you won't even get to it.
Its not a cpu - you can clean it as you would any other object just make sure you don't pour water inside.
Yeah, i was just wondering how robust the sensor part is if i vacuum it, like if i can damage or rip any part of it off or something, i know that i should only use a damp qtip and everything.