For years and years, I've been telling friends, family and customers to clean their computers at least once a year. Thank you for making this article. I've posted it on my Facebook and sent via email it to people I know who aren't on FB.

I've been cleaning computers for years and have seen horrors as bad and even worse than the ones in these pictures. I've even found roach colonies in them before.

I'd add to this article that it is vitally important to wear an anti static wrist strap when they clean computers. Also, if they use any liquid at all, it needs to be the highest % or proof alcohol they can get their hands on so that it evaporates quickly. These precautions are fairly inexpensive but can save your computer. A $20 wrist strap will save your multi hundred dollar computer from static shock.

If they have some one else do it for pay, they should only have someone do it who has CompTIA A+ certs. Would you rather have a shade-tree mechanic or Mr. Goodwrench to take your car's engine apart and clean it?