303 (230371) Instant Windshield Washer, 25 Tablet Super-concentrated with 3 times the cleaning power of ordinary wash Each table makes one gallon of top quality cleaner Easy to use, simple add 1 tablet to 1 gallon of water or drop in reservoir of clean water Dissolves completely to remove bugs, road film, dirt and grime Economical solution, 303 Instant Winshield Washer Tablets significantly reduce the amount of plastic containers in landfills