Sagging Sewage Program Lines-- Filth adjustments can produce your drain line to sag. When this happens, the part that has sunk accumulates paper and squander bringing about a blockage., ????? ??????? ????? ?? ????? ?????????????? ???? ??? ???????? ???, ????????????? ??? ??? ??? ?? ?????????? ???? ?????????? ??? ??????? ???.???? ?? ???????? ??? ????