Cleaning Dirty iMacs

My school just got 7 (count 'em 7!) rev b bondi iMacs donated. Unfortunately, they came from a vet office with lots of hair and dandruff floating around, so, as you can imagine they got very dirty. So, my question is what is the best way to clean these macs and what could be damaged?. I have an air compressor and bottled air and have taken a bunch of (mostly newer) iMacs apart. Thanks for the help!
iMac   Mac OS X (10.4.3)  

I cleaned my iMac by taking it apart, however working around the CRT can be deadly. CRTs need to be discharged before even coming close to touching them. That said, I didn't use much compressed air because, in many areas, it would have blown the dust further down inside. I used dampened rags and paper towels and a dampened soft paint brush to lift the dust off, only using compressed air when I could blow the debris away from the iMac.
The bottom comes off first, then the front panel, then the back (colored) part.
<http://homepage.mac.com/dreed2/PhotoAlbum52.html>
There are some manuals listed here for Bondi iMacs, but I haven't downloaded them to check them out yet. Gotta get back to work on installing the new kitchen floor.
Good luck with those iMacs.
Message was edited by: dreed2 (forgot to include a link)

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