Make sure the LCD screen or television is turned off. Tap water has minerals in it that will leave streaks.) The best ratio is 1:1, which would be like a half-cup of distilled water and a half-cup of vinegar or alcohol. Mix the distilled water and the vinegar or alcohol. White vinegar or isopropyl (rubbing) alcohol Here is a really inexpensive and simple suggestion. You can purchase screen-cleaning kits at computer supply stores or your local electronics outlet, but they are expensive and the stores aren't always convenient.
