My hand followed by a wipe on my jeans.
You get points for your honesty dude!
I use compressed air and a blow gun. Not the wimpy canned stuff, I mean a
compressor. Certain areas require a lighter touch like driver cones and cooling fan blades but it works well. The best part is you're not touching the item leaving scratches.
On a nice day, I'll open all of the doors and windows and dust the entire room with this method. Works well.
Bob