I tested once on a Dell Latitude C820 notebook - crappy enough to not care about. It had a normal matte screen (non glare). I wiped with a wet cloth and I also

I tested once on a Dell Latitude C820 notebook - crappy enough to not care about. It had a normal matte screen (non glare). I wiped with a wet cloth and I also used dish washing liquid to remove oil and fingerprints. Everything was easily cleaned. I also wiped very hard to find out how much abuse the screen could take. I did not damage anything. These displays are much sturdier than anyone would think! So just go ahead. Subconsciously I am sure I wanted to destroy this crapbox. But I didn't. In the end I had to throw it with force on a concrete floor. That finally did the job ;o). Oh, yes, I have forgotten: this is america. Please shut down the computer, disconnect all cords, remove the battery, discharge yourself, and no warranty. You act on your own risk etc. pp.