Several months ago my son grabbed a ball point pen off my desk and with glee scribbled on my LCD monitor. I was of course upset and researched the best way to remove the offending marks. Various methods and potions were recommended but I didn’t do anything about it. I got used to the scribbles, although looking at a web page with a white background was always annoying.
Eventually I asked again and Alex recommended Isopropyl Alcohol. Today I remembered that advice and asked for “i s o alcohol” in a chemist. I received a funny look in reply but she figured out what it was. She brought over a box of “Alcotip Swabs”. 5c each so I bought 4, just in case.
Did it work? Did it what! The swabs dried out quickly and it took two to clean the ball point pen marks off the monitor but it worked exceptionally well! I hardly had to apply any pressure as the alcohol dissolved the pen marks with ease. Here’s a gallery showing the pen marks (not so well), and the swabs. These things work really well if you have ball point marks on your screen!