I went to a home party and purchased a set of "window cloths". The first cloth has imbedded silver in the fibers. All I do is wet that cloth with warm water and wash the window - then dry with the other cloth. I did not believe it would work, but after I used them - I was sold on them. I have given them as gifts to many friends who have been just as amazed as I was. No more chemicals or paper towels. I'm a NEW WOMAN. LOL