Alcohol and dry rice, just put them in there, cover up all holes, and shake it around. The abrasive nature of the rice should scrub the walls of the bong clean. That's what I've always done, and it works like a charm.
Hempamasta Reviewed by Hempamasta on . Layer of black goo on bong.. Hey, I have A glass bong and where theres water and near the top it's clean but just above the water level theres A layer of black tar, how can I get it off? my bong doesnt come apart thanks a liot!:stoned: Rating: 5