Formula 420 Daily Use Glass Cleaner is so great it's the last glass cleaner you'll ever buy. This stuff is quick and easy to use and it's specially concentrated for daily use. This cleaner uses a patented AbrasivAction Cleaning Technology that works wonders on glass, metals, and ceramics. It's biodegradable and earth-friendly too! You can use this cleaner every day to keep your bongs and pipes sparkling clean and fresh. It cleans and deodorizes in mere seconds so it won't take much of your time to use. Formula 420 Daily Use Glass Cleaner is available in two sizes: 16-ounce