Quickest most effect way to clean Bong

[LesPlenty]

have you heard the one about ISO and a little salt?

works a charm. and you can reuse the alcohol for quite some time, too.

When that does not work it is time for PBW or Napisan for a cheaper alternative...who would have thought!

 

[flaky]

I've had really good luck with 100% acetone on glass. It's super aggressive and you need to be very careful because it is much more flammable than iso, in addition to its otherwise foul properties.

But holy crap does it chew through old tough deposits.