Sagging Sewage Program Strains-- Grime variations can make your drain line to sag. When this occurs, the segment which includes sunk accumulates paper and also waste resulting in a blockage.?????????? ?? ????? ??????? ?????????? ??? ???????? ??? ??? ??????????? ?? ??? ?????? ?????????? ????????? ?????????? ?? ???? ??????? ???, ???? ??? ???? ????? ?