Sagging Sewage Method Strains-- Filth improvements can make your drain line to sag. When this happens, the part which includes sunk accumulates paper together with waste bringing about a blockage.?????????? ????????, ????????????? ??? ???????? ???? ?????, ???????? ? ???????:????? ????? ????? ? ???????? ????? (?.?. ?????? ???????????)???? ??????????