My two year old got a hold of a permanent marker and colored all over my oak desk and my LCD flat panel TV screen. After trying the strongest cleaning chemicals in my house, the markings didn’t budge. In a panic, I called our local hardware store to see if they had anything that would get permanent marker out, and they recommended a product that was around $14 a bottle. However, the worker said it is such a hazardous chemical that it would probably ruin the LCD TV screen and eat the finish off my desk. Because of its toxicity, I declined and went home. When I got home I remembered my 1 oz. bottles of Thieves Spray. It dissolved the permanent ink out of the desk and the LCD screen beautifully.* It looks like nothing ever happened! Now that is what I call POWERFUL!