How do you guys clean your pieces?

I've always wondered how people have cleaned their pipes and bongs, do you guys full clean it or just halfway? What solutions/methods do you use to clean it? Maybe a natural way? I pour in some isopropyl alcohol andplug the open ends of my bong with cotton balls and shake it up, then rinse and repeat 3-4 times until its clean, I've heard some people let it sit for a while with salt? Let me know how you clean your piece.