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Full Crystal refill kit – two 4 oz. Crystal powder exterior window cleaner packets for glass and screens (cleans up to 40 windows) REMOVES TOUGHEST STAINS: Our TWO 4 oz. window cleaning concentrate packets that cleans up to 40 exterior house windows. This outdoor window washing spray effectively removes dirt, grime, stain and water deposits from the windows, siding and glass doors and leaves a streak-free shine. SAFE & NON TOXIC: Cleaning Crystals are proudly Made in the USA. (BEWARE overseas sellers do not include cleaning crystals). Clean windows without harming plants, lawns, shrubs, and flowers beds. Pressure washer soap for windows also proves to be non-corrosive to plastics and other outdoor surfaces. REACHES UP TO 27 FEET HIGH: For tough cleaning jobs, no scrubbing, rising and using the ladders to clean the hard-to-reach second story windows. Simply aim spray the crystal cleaning solution and walk away. Spray on window cleaner for hose reaches up to 27 feet and makes cleaning convenient, quick and fun. EASY TO USE: First wet down the surface thoroughly, spray window washer cleaner from bottom to top and back down to the bottom and allow the liquid to penetrate for about one minute. Then rinse the surface and allow it to dry naturally. The engineered bottle allows you to clean and rinse in one step. NOT JUST FOR WINDOWS: The versatile cleaning crystals are the perfect cleaning solution for your home. Outside window cleaner can be used on a variety of surfaces including windows, glass, screens, shutters, gutters, and over hangs and much more.