H70 - Keep radieator relatively clean?

I know Corsair recommends having air drawn in through and into the case. As much as I try to keep things dust free, it happens so I end up cleaning systems when I open them or at least every quarter. Does anybody have any tips on keeping the radiator relatively clean? Perhaps an air filter on the intake fan even if might restrict some flow?

I'm a n00b when it comes to radiator cooled solutions for systems. I've always gone air cooled where dust bunnies still find their way in no matter what I do. :\

Easiest is a can of compressed air. Shoot it in opposite of the normal airflow so you do not drive dust in deeper. A small 1/2 inch paint brush and some a damp paper towel to work over the fan blades and inside the housing. Its out of season now, next spring go to a hardware store or building suppy and find a replacement thin foam filter for a window airconditioner you can get filter covers online and cut up the AC filter to have bunches of replacements.

Million ways to skin this cat. Filters and filter housings available on the net. Google "120mm fan filter" or whatever fan size you need.

swipe a pair of hose from your mom/sister, cut to fit and secure with a rubber band.

or

use a dryer sheet (you know like bounce or whatever) the foam ones work better than the paper ones. Get unscented unless you want to have a combo filter/air freshner

Thanks for the responses. Definitely not rocket science and looks like the same treatment for normal air cooling and filtering apply. Was just making sure there wasn't anything in particular with radiators. Time to break the n00bness and give the H70 a shot. Was going to go Venomous X.

(Good lord. I butchered radiator in the subject. My brain was smashed by some recent SR-2 messages in the DC forum. )

I use a filter with my H50. I am using 2 1850RPM GT's in push/pull and I see no difference in temps with or without the filter. I do notice a reduction in the frequency of having to blow it out though which is nice. It's a choir dragging the compressor hose from the basement, through the house then to the attic where my room is. I having to climb a ladder to get up here, so less often is preferred.