Many use a air duster but I personally have a massive air compressor. loud as shit while I turn it on and it gets ready. then I just turn down the psi and spray out the pc. if there's still dust left I go and get a microfiber cloth along with 90% alcohol... u don't want to go lower than that. Get a small used air compressor... will be alot more worth it than 50 cans of Ultra Duster.