I have a sewer cleaning machine. I bought it about 20 years ago from Harbour Freight. 1/2 horse, 75' of 1/2" cable. Has a pressure foot switch to turn it on or off. You can get out to about 65' with it. Any further than that the steel cable comes loose and starts to whip the **** out of you till you get off the switch. Lent it to a buddy, warned him about the loose end. Next day he returned the machine and had a big red mark down the side of his face. I started to laugh and he went "Yea, yea, yea"
I bought it because I have a 110 year old Elm tree in my front yard and very old clay sewer pipes that would clog from roots every couple years. It usually would happen on a Sunday night and the rotor guy would charge $100-$150 a touch to unclog it.
He would ask me for a garbage bag and dump roots and paper products into the garbage bag. He would then tell me to ask my wife to not flush sanitary products into the sewer. Her answer was "I don't". Good thing I have a comfortable couch to sleep on.
Turns out that the neibours sewer line and mine were interconnected. His wife and daughter would flush and I got to sleep on the couch.
Here's a link to the 50' one they sell now:
50 Ft. Compact Electric Drain Cleaner
Good luck