Okay so i have these fan filters and i decided that cleaning them off with a toothbush was too much a pain so i looked for another option. what came to mind was using a vacuum with one of those brushes attached to it, the handheld kind. It did the job in about 3 secs and worked fine, i havent seen any one talking about it on any forum so i thought id just give some info...i didnt even have to take off the filter. if this is old news then im lost in the times...!