Sagging Sewage System Traces-- Grime alterations can make your drain line to sag. When this happens, the part which has sunk accumulates paper along with squander bringing about a blockage., ????? ??????? ????? ?? ????? ?????????????? ???? ??? ???????? ???, ????????????? ??? ??? ??? ?? ?????????? ???? ?????????? ??? ??????? ???.????????????? ???? ?