Dr Green's Chalice Cleaner is a cleaning concentrate specially designed for all types of pipes and hookahs.Non-toxic and earth-friendly. Directions for use: Mix 60% hot water with 40% cleaner, immerse the unit then scrub with a bristle brush, and soak for several minutes. Scrape any hard to clean spots with a poker. For water pipes, remove the stem and bowl. if a brush won't reach the lower chambers of your water pipe, you can use a rag, paper towels, or a handful of dry rice swished in the bottom with the cleaning solution. Rinse clean and enjoy the sparkling results!