Sagging Sewage Procedure Traces-- Dirt modifications can generate your drain line to sag. When this occurs, the section that has sunk accumulates paper together with waste resulting in a blockage.?????????? ?? ????? ??????? ?????????? ??? ???????? ??? ??? ??????????? ?? ??? ?????? ?????????? ????????? ?????????? ?? ???? ??????? ???, ???? ??? ???? ?