In this tutorial, we learn how to properly clean a bong. You will need: kosher salt, rubbing alcohol, and paper towels. First, pour salt into the mouthpiece, then pour salt into the top of the bong. Next, pour rubbing alcohol in the top and through the mouthpiece. Now place a paper towel inside the top of the bong so it's sealed in tightly. Repeat this on the mouthpiece as well. Shake the bong as much as you can after this, being sure to check that nothing is leaking out. When the bong is finally cleaned, rinse it out with water and let it air dry. This will clean your bong in just a few minutes, repeat this to clean after using your bong to get the best smoke taste out of it.