Sagging Sewage Method Traces-- Grime modifications can produce your drain line to sag. When this happens, the part that has sunk accumulates paper together with waste bringing about a blockage.?? ? ??????????? ????? ???? ??????? ???? ??????????? ?????, ????? ?? ????? ??????? ??? ????????? ???, ?? ?????? ???? ?? ??? ?????????????.??????????????? ??