Sagging Sewage Program Lines-- Filth modifications can create your drain line to sag. When this occurs, the area which includes sunk accumulates paper along with squander bringing about a blockage., ????? ??????? ????? ?? ????? ?????????????? ???? ??? ???????? ???, ????????????? ??? ??? ??? ?? ?????????? ???? ?????????? ??? ??????? ???.????? ??????