It depends how much care you want to take of your screen put anything you like on if you’re not that bothered if you want to use a little care do not use spray cleaners(unless specifically for LCD screens and then with caution) don’t use tissues don’t use tap water don’t scrub or press hard on the screen . Distilled water and a Microfiber cloth (damp not wet) are generally adequate but for badly stained screens you can use a 50/50 mix distilled water and white vinegar