Sagging Sewage Method Traces-- Grime variations can make your drain line to sag. When this occurs, the area which has sunk accumulates paper along with waste bringing about a blockage.?????????? ?? ????? ??????? ?????????? ??? ???????? ??? ??? ??????????? ?? ??? ?????? ?????????? ????????? ?????????? ?? ???? ??????? ???, ???? ??? ???? ????? ???????