How do I properly clean an iMac keyboard?

Shutdown your Mac, first.

I take a small, hand size terry towel cloth and use a little amount dish soap on it, get the cleaning cloth very wet and then wring it out until it no longer drips water. There should be little sudsing from the soap and use this to clean the keyboard keys and the aluminum.

Should take off all of the grime on the keys and any crud on the aluminum keyboard enclosure.

kcbrowne3 wrote:

How do I properly clean my iMac keyboard?

http://support.apple.com/kb/ht3226#peripherals.

Apple Aluminum and Plastic Wireless and Wired Keyboards

If your keyboard is wired, first disconnect it from your computer. If it is wireless, power off the keyboard andremove the batteries. To clean the outside of your keyboard, use a lint-free cloth lightly moistened with water. Don't get moisture in any openings or use aerosol sprays, solvents, abrasives, or cleaners containing hydrogen peroxide.

If you have dust and dirt under the keys, try using a can of compressed air to blow out any loose dust out of the keyboard.

Do this waaay away from your Mac, obviously.