If your talking about baking soda and vinegar -- NO --
yes
Root damage can cause extensive damage to your home itself. Once the sewer lines have been compromised, many problems can occur within the home. The water supply can be interrupted and floor drains and toilet can back up, potentially causing flooding or damage to appliances. No type of sewer line is immune to roots. Clay pipes, the most common kind of pipe in older water and sewer systems, are the most susceptible to root damage. Roots will penetrate any crack, hole, or poorly sealed joint in a sewer line. Concrete and PVC pipes are less susceptible to root intrusion but are not root-proof. Once roots penetrate the line, they can exert considerable pressure on the pipe, which then must be repaired or replaced.
it is found in sewer pipes in the USA
No.
Not normally even the connection to the public sewer is not covered
Only if the water pipes are leaking.I know that the roots of the Italian Stone Pine can grow thru sewer lines. It also caused pavement heave and a split in our retaining wall.
3" - 6"
Absolutely not
With a wire brush.
Sewer leaks damage the environment by letting filthy waters either leak into our water pipes therefore poisoning our tap water or leaking out to sea or a larger body of water causing dirty water there. This could lead to the death of many marine life, including native fauna.
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?