Any thing from hair to toys to roots or anything you jam down your toilet or drain pipe that wont decompose. I have snaked out a lot of sewer lines and I have to say that the number one reason for a clogged drain line is the pipe is not graded correctly or is back graded from settling. My 2nd most reason is tree roots or damaged pipe. If your home has plastic pipe like DWV ABS or PVC and it all grades perfectly down hill without damaged pipes the chances of having a clog are very very slim. Kitchen drain with disposals are the only drain lines I personally seen that have clogged with perfect grade with plastic drain pipes. Shower and tub drains mostly clog at the shower/tub strainer or trap and very rare clog after that if its plastic pipe and has slope.
clogs
Various fitting degrees
You may not have a backflow preventer in the main line. This prevents anything coming back from the main line. It may be coming from your neighbors above you on the line.
It will more than likely plug the toilet and/or drain line and cause a flood and backup of the sewer
Sewer Line The Woodlands
With a sewer line locator of course
Sewer Line katy TX
Sewer Line Cypress TX
Sewer Line Pearland TX
Yes, if you bought that as a rider. No if you did not.
The cardboard could cause a backup of the sewer. Eventually the cardboard will break down and dissolve.
Either they are on a separate sewer line and connect to the main sewer line later on or they sewerage is pumped by means of a machine into the main sewer line.
No