get a poker to ash out cashed bongs. clean that thing everyday. don't wanna smoke outta a grimey bong, it kills the flavor of fine sinsemillia. incidentally, sinsemillia isn't a word that's recognized by rollitups spellchecker. (isopropyl) Alcohol and salt is a perfect mix, just fill the bubble up with a mixture of alcohol, a tablespoon or two of salt and shake it up real good, rinse well, refill, smoke and repeat daily if you actually smoke. Enjoy!