What does bacon grease have to do with sewer main clogs? Food and oils that are washed down the drain are one source of build-up that can lead to sewer line clogs.
Knowing more about your home's plumbing system is the first step to preventing plumbing problems and knowing how to fix them when they come up.
The sewer main is one of the areas of the home's plumbing system that many people don't know enough. Don't wait until you have an emergency to start asking questions!