1 Year Supply for 2- 4 cars: 1Piece = 4L = 1.05 gallons washer fluid; 50Pcs = 200L = 52.5 gallons washer fluid. 50 PCS windshield washer fluid is 1 year supply for 2-4 cars. Saves a lot of money compared with traditional washing liquid Portable & Individual Package: The car windshield washer fluid tablets are compact and portable, measuring only 16mm*2mm. Each tablet comes in its own individual package, making storage convenient and hassle-free Effective Performance: Windshield washer fluids with powerful dirt-removal capabilities; tackle dust, sand, bird droppings, insect splashes; reduce friction between wiper blades and glass; resulting in smoother wiper operation and reduced noise levels Use Method 1：①Open the water tank cover. ②Pour water into the tank. ③Place a washer tablet into the tank. ④Wait 15-20 minutes, then activate the wipers to clean the windshield Use Method 2: ①Drop one tablet into the water bottle. ②Wait 15 minutes for complete dissolution. ③Ensure thorough dissolution without any residue. ④Pour the dissolved fluid into the tank Note: It is a formula used in summer, requires temperature to be higher than -5℃(23℉); mixed with an anti-freezing agent in winter; please keep the product out of reach of children and pets, and in case of contact with eyes, rinse immediately with water MULTI-USE: Windshield wiper fluid is practical for households; powerful stain-removing capabilities in kitchen; effortlessly tackling stubborn stains on countertops, floors, and other surfaces; maintaining a clean and pristine home has never been easier Reliable & Excellent Service: If you have any further questions or need assistance, please don't hesitate to reach out to us. We are always here and more than happy to assist you Product Description Windshield Washer Cleaning Tablets