Purple Power Original Formula will clean any product with ease. This incredible no-scrub, soaking solution is sure to leave all Pyrex, glass and acrylic plastic sparkling like new! Go ahead, try this cleaner on your water pipes, bongs, hand pipes, grinders or ashtrays. You will be wowed by the cleaning strength of Purple Power. Directions: Shake Bottle Place item into a container and soak for 45 minutes Rinse thoroughly with hot water Repeat if necessary, then air dry Re-bottle solution for the same effective cleaning results next time Pro Tip – For larger items and acrylics, dilute Purple Power with 50% hot tap water. Caution – Do not use on metals.