We have no idea how many things can cause blockages, blockage in the sewage system, which in some cases can cause a much bigger problem than a simple blockage.
He turns away, that the sewer pipe cannot withstand that pressure due to the blockage, which only increases from the sewage rushing there, so it can slide apart during the fitting, flooding everything.
You can see it in our videos below, how much area it can flood, which can cause quite a bit of annoyance. That's why it's worth thinking about sewer maintenance every year, and if necessary channel camera work, or perform cleaning. In this way, a bigger problem can be prevented, not to mention the risk of infection, which is more gentle on the wallet and avoids annoyance.