Grunge Off is one of our favorite cleaners for water pipes. Specifically formulated for glass, Grunge Off cleans away grungy build-up and cuts through residue rapidly to get sparkling clean results. Grunge Off advanced cleaning technology ensures optimum results in optimal time. Grunge Off Super Soaker's advanced cleaning formula deodorizes and sanitizes. It is non-toxic, non-gritty, free of alcohol and abrasives and is earth-friendly and biodegradeable! Use only on glass products associated with the use of tobacco and other herbal blends.