Sagging Sewage System Strains-- Grime modifications can create your drain line to sag. When this happens, the area which includes sunk accumulates paper together with squander bringing about a blockage.??????????? ????? ??? ??? ??? ?????????? ?????? ??? ???????????? ?? ????? ????? ??? ????????, ??? ????????? ??? ??? ??????? ????????? ?????? ??? ???