Sagging Sewage Method Strains-- Grime changes can produce your drain line to sag. When this occurs, the part which has sunk accumulates paper along with squander leading to a blockage.????????? ??? ????????? ???????? ??????? ??? ?????????? ???????????? ??????? ?? ????????? ?????????? ???????????.???? ?? ???????? ??? ???????????? ?????, ????? ?????