Used to clean out a gutter drain pipe and it worked just fine.
My 15+ foot of drain pipe coming from my downspout and going underground to keep the rainwater out of my yard was clogged w.leaves and roof debris so no longer drained well.
So I used this to clean it out - worked like a charm using a back and forth motion with the auger and spraying a hose down it at the same time. So now this little ole lady can add that to her long list of things she can do herself.