Feather duster PC cleaning

I just saw online that cleaning a PC with a feather duster is a big "NO-NO". Well.. It's actually pretty obvious.. Static electricity and stuff.
I am always cautios about these things...
But, to be honest, I cleaned my PC's with a feather duster since 2008.. ALL of the parts.
Never had any problems..
Nothing gets the PC cleaner than a feather duster

Could have I done damage without knowing it?
I mean, even though the PC runs fine, Could I damage it somehow?

richc46 said:

If you caused any problems with your PC, it would be obvious. The most common problems would cause hard drive failure and you would know if that was beginning to happen. My advice is just enjoy your PC and clean it in the proper manner.

It's just so weird. Especially that I cleaned my HDD's for ages using a feather duster.. Including the circuit board.
I think I will try and find a static free feather duster. I just can't think of a better cleaning method.

Thanks for the comment.

i do the same as linnemeyerhere.

linnemeyerhere said:

I use compressed air and either a clean dry tooth brush or various paint brushes and that works fantastic.

oscer1 said:

i do the same as linnemeyerhere.

Compressed air from a can?
The ones I saw are made of Burane and Propane gases.. Are they safe to use? Can I sprey them on the hardware itself? Or is it just for general cleaning like fans, case filters and cooling ribs?

yes from a can yes you can blow on every thing. do not shake can keep the can upright. should be good

oscer1 said:

yes from a can yes you can blow on every thing. do not shake can keep the can upright. should be good

Are you sure? I mean.. It doesn't sound to good to put Butane or Propane on my HW..
It can leave residue too..

Barman58 said:

Any cleaning of the interior should only be performed on a system that is switched off and disconnected from mains power, and left to cool to normal room temperature before starting any work. this is just common sense before opening the case

Sorry mate, I don't see how this relates to any of my questions.
But yes, I follow these rules.
I also press the start button when the power is off and the PC is disconnected from any power source to get rid of capacitor current. I can see the fans spin a bit when I do so.