What do you people use to clean your pieces? I use dry rice and methylated spirits then shake it. Cleans the grit pretty well and I have both of the things in my house most the time.
When it's hard to draw till it's warmed up, and then only when I can hear the resin gurgling when I take a deep hit.....
I am sure this was my DS policy too.. they gave me about 5 pipes all were in dire need of a soak.. one black pipe turned out to be clear.. it's my fav too and it needs cleaning now.. but I can still draw air so she's just building up flavor.
once every six months to never. i boil my bowl in a pan with water , take the pipe out and add 4 scoops of lemon tea from liptons and enjoy after i strain all the resin out.