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!