Sagging Sewage Technique Lines-- Dust alterations can make your drain line to sag. When this occurs, the part which includes sunk accumulates paper and waste resulting in a blockage.????? ???? ????????? ?? ?????????? ???? ???????? ? ???????? ??? ??? ??????????, ?? ????????? ??? ??? ??? ???? ?? ?????????, ?? ??????? ?? ?????? ??? ?? ??????? ??? ?? ?