It is indeed amazing how one can thus clean larger windows streak-free (!). The document provides the evening sun that casts its light on two 2.25-square-foot disks. The previous use of various cleaning agents yielded only unsightly results. Now it is a pleasure to look through the windows in the evening light.
This cloth can be disposed of in any other hitherto commercially resurrected Window Cleaner; is already well done.
The easy-to-use ALCLEAR window cloth is a real recommendation.