As I enjoyed my glass cleaner Karcher and I found them very effective cleaner provided (not Chris, I do not work for the manufacturer and am a lambda user), I had great pleasure to buy from them this article. Let me explain: we live in a polluted world. Me so far, I was fed up trashing rags and I pre-cleaned my windows with wipes. I'm not saying you wasted time! With this product, my original cloth, tags is always in immaculate condition, I can tell you that I appreciate. My method: I always pass my old cloth under the water then I pschitte my product and I rub my window and I look forward and admire the result! I also specifies that once I'm done having fun -I assure you clean my windows désormais- m'éclate I clean the squeegee vacuum and all parts of the instrument in contact with the dirty water and I rinse my old cloth that almost immediately found its original white. And I make a demo to all refractory or skeptical if necessary!