Great topic. I normally just wipe my gear and polish the lenses when there are visible smudges. The body itself I don't worry about too much, as long as screen, viewfinder and sensor are clean. When I was in dusty conditions I will blow some air over it.
But right now I'm anxiously awaiting one of the probably most agressive cleaning products I've ever ordered. An UV-C lamp. I store all my equipment, lenses, body, etc in a glass cabinet and that's fine normally. But i also store other stuff there. About two weeks ago I put an old headphone in there and the cushioned earpieces seem to have gotten wet somehow. Anyways, they started molding. Don't ask me why it happened after I stored them in the cabinet or why they got wet, I have no idea. But now I'm scared of lens fungus so what to do???
I wiped down everything in the cabinet and the cabinet itself with desinfectant, but I really don't want my equipment damaged by fungus, especially the non-weather sealed vintage lenses. And as I can't be sure I've gotten every last spore, I'll nuke them with agressive UV-C radiation. I know this works because I used the same method for killing fungi in the lab.
But those lamps are no joke and a serious health hazard. So while I'll be blasting my equipment and by proxy the whole room with radiation I have to make sure noone enters or is inside because the strong light will seriously damage your health. This type of UV will give you heavy sunburns in minutes (normal sunblocker wont help, but
there might be an option), destroy your eyesight and in addition will transform the oxygen inside the room into ozone, which can also have really bad effects on your lungs. So the plan is to replace a normal light with this bulb from hell, place my lenses beneath, shut all blinds, switch it on and leave the room, after 15min, switch it off, turn the lenses around, and give them another 15 minutes, ventilate afterwards for about an hour.