Full Crystal Refill Kit – Two 4 Oz Crystal Powder Exterior Window Cleaner Packet
Each 4 oz bag makes up to 640 fluid ounces of cleaning solution when mixed as directed. Full Crystal refill kit – two 4 oz. 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.