mine has stayed really clean with only 90% iso and salt every week or so. only finger prints/water stains that get rinsed right off, aside from that just like new. i at one point had to use an old toothbrush for a piece of resin that was caught up, but that came out fast.Great question @reallybigjesusfreak -- I love bong hits especially from a clean bong and I find the beaker bong with ice pinch doesn't clean like my tube does. I can run my bottle brush down the tube and be good-to-go in seconds.
For cleaning the beaker bong with that ice pinch I find myself using alcohol and salt, drop of soap, maybe some rice. Messy. I hear some say they can clean with flexible brushes through the pinch but I haven't seen anyone do it.
Here are my two:
View attachment 4401167