Quote Originally Posted by notransfer
salt and isopropyl alc...someone taught me that...but maybe thats just to clean it...i always dump some listerine in it and bubble it then wash it completely again...

DON'T use salt and alcohol in an acrylic bong. It will scratch and alcohol and plastic = bad medicine. Glass only.

DO use hot, hot ,hot tap water and oxyclean. It may take a couple of tries and may not come crystal clean as the acrylic is probably stained and not just dirty.