Compare Quick view Formula 420 Glass Cleaner 12oz MSRP: Was: Now: $7.95 Formula 420 Glass Cleaner 12oz Rated #1 By Consumers! Formula 420 provides a 1 minute solution to the time consuming hassle of soaking and scrubbing. Formula 420 is the fastest, easiest & most effective cleaner on the market. Size: 12... Add to Cart The item has been added Add to Cart The item has been added