how often do you clean your PC from dust ?

[NinJake]

I also take the PC outside lol. No need to dust inside then have it work its way right back into the dust filter! I try to 4 times a year. Will dust and clean sooner if necessary.

[Shreyas1]

every week, whether my pc needs it or not.I go through duster cans quickly.

[ScratchCat]

I have two layers of filters , the case filter which you can clean without removing anything , just blow to get the dust off. Then a layer of hover filters which last forever. Result: virtually no dust inside. 

Also running your fans slowly may help ¯\_(ツ)_/¯ 

In the end, every year or so

[winters\]

I try to clean mine every couple of months or so. Seeing as how I have no bets and clean my house every weekend the dust build up inside my PC is relatively low. I honestly clean it more often than I really have to just for the soul purpose of loving to take apart and put my PC back together.