replying to findingzzero, Rick wrote:
I just read an article about this... it sounds like what they are calling
"FOG", Fat, Oil, & Grease', however if i read it correctly, it is a misnomer...
It's basically a type of soap that doesn't dissolve in water, but rather, Fats,
oils, & grease mix with calcium from hard water, (or maybe old milk poured down
the drain). The fat/oil/grease mix w/ the calcium and I guess kinda turn into
a dense foam that sticks to the pipes. The article did not say how to get rid
of it, and they are still unsure why so much of it forms in city sewers when all
food establishments are required to have grease traps...