To scour them use a water Jetter as it removed years of build up soap scum and grease deposits and scale.
it is found in sewer pipes in the USA
Not normally even the connection to the public sewer is not covered
3" - 6"
With a wire brush.
You could install your own sewer cam and get a look however doing so would likely involve getting in to your sewer pipes which is best left to a professional. Call a plumber to look in to your pipes if he can't find anything install the cam while he's got the pipes open.
Probably not, but where does the water from the sink and shower go and what sewer problems are you having?
Pipes. It is used for alot of underground storm, sewer or freshwater pipes by cities.
yes
a person who jabs poo or likes sewer pipes. It is a persons name.
Yes it normally does.
Any tree that has long roots.