Sagging Sewage Method Strains-- Grime modifications can create your drain line to sag. When this occurs, the part which has sunk accumulates paper and also squander bringing about a blockage.????????? ?? ????? ??? ???????? ??? ??? ?????????? ?? ?????? ??? ????????? ??? ??????? ??? ?????? ???????? ????????.?? ?? ???? ?????? ??????? ??? ????????? ???