Don't have any alcohol in my household at the moment, sooo..... i scavenged through my cleaning supplies and came across a pretty good method of cleaning my bong. I use those dishwasher pods to wash my dishes so why not fill my piece up with warm water and plop one of them bad boys in there. All it took was a good soaking and a toothbrush to the parts that it could reach. My glass turned out great in the end, no residue or stains!! Highly suggest it!
I would have never thought of that but it makes sense, they are made for cleaning glass after all. I think I might try that next time cause isopropyl, at least for me, usually doesn't get 100% of the resin out of my bong