Sagging Sewage Method Strains-- Filth modifications can create your drain line to sag. When this happens, the segment which includes sunk accumulates paper along with squander bringing about a blockage.??????????? ????? ??? ??? ??? ?????????? ?????? ??? ???????????? ?? ????? ????? ??? ????????, ??? ????????? ??? ??? ??????? ????????? ?????? ??? ???