6pcs Compact Effervescent Tablets Detergent Car Windshield Glass Washer Cleaner Equals 24L Wate Features: This compact tablets turns regular water into powerful fluid detergent, 1pc tablet melt in 4L water equals to 4L windshield washing detergent. Dissolve thoroughly, no residual, environmental friendly, biodegradable, phosphate and fragrance free formula. This product is used in automobile windscreen and the daily cleaning of all kinds of glass products. Mixable with anti-freezing agent for improving cleaning performance in winter.  Very effective at removing bug splatter, bird droppings, tree sap and road grime from your windshield. Reduce the friction between wiper and windshield, plays a protective role. More conveniently and easily e than traditional windscreen cleaner. Specifications: Material: Sodium Bicarbonate, Citric Acid Color: Blue Quantity: 6pcs  Diameter: 2cm / 0.8in Thicknss: 5mm / 0.2in Application: For car windshield cleanig, glass washing  Package List: 6 * Compact Effervescent Tablets Note: Please be aware that this is a summer formulation. It will not prevent water from freezing in your reservoir. If you need to clean your windscreen during freezing cold winter, just purchase an anti-freeze windshield cleaning solution.