The six to eight foot lengths are fairly a great deal everything is important as most rest room drains dump right right into a bigger 3 or four inch mainline, and if you continue to are obtaining plugged up, then it is time to call a plumber or rooter provider to wash the key strains by using a bigger equipment. We after pulled 2 clean rags out of the mainline about forty feet in, no additional issues there and liquid cleaner under no circumstances might have completed it.