Submitted by a member - Jan 2008
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You need to be very careful what cleaners you use on a LCD screen.

You do not want to use window cleaning products that contain ammonia, because over time it will cause the surface of your screen to become hard and brittle. This will lead to cracks in the screen.

I have searched in office stores for LCD monitor cleaners, and found a few little moist wipes. You must read the package though, some say they are made to clean monitors, but not specifically LCD monitors. Stay away from those!

I actually found the following warning on Dell's website:

Do not use any of the following chemicals or any solutions that contain them: Acetone, ethyl alcohol, toluene, ethyl acid, ammonia, or methyl chloride. If you have a different chemical or solution and are not sure whether it is suitable, do not use it. Using any of the chemicals in the previous list may cause permanent damage to the LCD screen. Some commercial window cleaners contain ammonia and are, therefore, unacceptable.

And also found the following advice on Dell's website:

Many cleaning solutions are sold specifically as LCD cleaners. You can use these to clean LCD screens on Dell notebooks. Alternately, you may use a 50/50 isopropyl alcohol and water mixture. Microfiber cloths such as those used to clean eyeglasses are excellent for use with LCDs.

I did quite a bit of research online and found several other tips worth mentioning. First, many people talked about the water and isopropyl alcohol cleaner, but most of them warned that you should use distilled water to avoid spots on the monitor after it dried.

Also, it would not be wise to use paper towels on the monitor as they could scratch the surface.