I take mine for a quick dip in the bath. I make sure to scrub properly in-between the fan blades and I blow away all the bubbles. Like new.
whoops didn't realise this was general hardware, not general discussion
Anyway I use a hoover sometimes, but just for general cleaning now and then. I hold it a bit back and don't get in too close as I am cautious. I used compressed air to blow-out hard to reach areas though if I wanna do a more thorough clean (which I will prob be doing soon since 'cause of the summer heat
)