DO NOT USE WINDEX!!! Windex has ammonia in it.\n\nOffice Depot has special TFT cleaning packets, but they are really expensive. I'm not sure that you even have an office depot in the UK or Germany or wherever you are, but the point is that there is a special chemical for cleaning TFT screens. But reelbigfish is right - DO NOT USE WINDEX you will permenantly haze your screen with it.