Hi there everyone, I've got a MacBook 4,1 (early 2008) which hasn't been cleaned on the inside since I bought it, yet it has surprisingly survived 9 years of heavy usage. Planning to upgrade the ram and get an SSD drive, but before doing that, I want to clean it cause I've grown tired of hearing the fans spinning every time I use Photoshop or GarageBand. I was looking up online how to DIY this and I've come across three die-hard camps who plain and simply reject each others methods. That's: (a) People who only advise to use a vacuum, cause "compressed air will spray liquid on the hardware parts, or it will simply push the dust to places you can hardly remove it from". (b) People who only use a compressed air can, cause "vacuum creates static which will fry your hardware". (c) People who unscrew the fans and only use a brush to clean them, but I'm still unsure how they even manage to take out all the remaining dust from the inside of their MacBooks. Anyone willing to shed some light here? Really confused right now. What should I do? Btw, I'm not OCD, just trying to clean my computer. Also, would you advise me to clean the fans or just buy new ones and replace them? Either way I'll clean my MacBook's inside though, cause I bet it has to be reaaally dusty in there after 9 years. Any insight is welcome guys. Thank you very much for your time.