So I got bored earlier and decided to clean my bong. I use Grunge-Off and it generally works quite well, but there always seems to be a little bit of wiping needed after. There are spots in the chamber that I can't reach to wipe, so they stay a little nasty even after I clean. Specifically, that really nasty part where the waterline is. I tried reaching in there with Q-tips for a while and had limited results. Then, I came up with the little tool in the pictures. It's just a vape mouthpiece (~2.5 inches long) and a Q-tip bent at a 135 degree angle. I shoved the end of the Q-tip in the mouthpiece, and duct-taped over the bend until it stayed rigid. It worked pretty damn well as you can see. Here, you can kinda see how you use the tool Cleannn Even the bowl is pristine
you should be able to find tube or hose brushes at any pet or aquarium store. generally used for fish filtration maintenance, perfect for cleaning tubes of all kinds...
You can use rock salt or rice to get those hard to reach spots, just swish them around in your bong with alcohol (or whatever you use) and it should erode the resin away.
