How Often do you clean your laptop?

I try to clean mine yearly. Dust and other particles can attach to different components inside the laptop. 

Press together windows key & R, Get a box and write recent/%temp%/temp, press ok and delete all junk file.

Can't think of the last time I did.  I only use it about one or two times a year and it's in a carry case.  

I don't have one to clean. Those are too big to fit in one hand so j don't use them 

Every once in awhile I turn it upside down and shake it to get some of the cookie crumbs out of the keyboard.