Cleaning questions

Hi all,
I currently only have a 17-55 attached to my D50 and I haven't taken it off since I first bought it.
Just wondering if the camera requires cleaning? Would there be dust inside even if I have never removed the lenses?
What cleaning stuff should I avoid using on a camera?
Thanks.
I currently only have a 17-55 attached to my D50 and I haven't taken it off since I first bought it.
Just wondering if the camera requires cleaning? Would there be dust inside even if I have never removed the lenses?
What cleaning stuff should I avoid using on a camera?
Thanks.