Fri 28-Dec-12 03:00 PM | edited Sat 29-Dec-12 06:25 AM by RRRoger
It is as safe as it ever will be.
I have not had to clean my D600 or D800 yet. I got the first ones sold in Monterey Bay.
Using a bulb blower properly with the camera opening face down in a relatively dust free spot is fairly easy and usually very effective. Beware of canned or compressed air. It can damage your camera if used wrong.
I often do an in camera cleaning after changing a lens. I rarely have dust bunnies in the sky. These sometimes require wet cleaning, but can usually be blown off.
Proper lens changing technique is critical. This is when most dust is let in. I never leave my camera open and face up even in my cleanest room, except when doing a wet cleaning while viewing thru the 9 inch magnifier on the light immediately above it.