Drum augers A drum auger is a motorized auger with modular blades designed for various gauges of pipe.Źródło: https://en.wikipedia.org/wiki/Plumber%27s_snake
A drum auger is powerful enough to cut through tree roots.
Used unskillfully, they can also damage plastic pipework and even copper tubing. Roto-Rooter Main article: Roto-Rooter The Roto-Rooter is an electric auger invented in 1933 by Samuel Blanc, an American.His wife called the invention a Roto-Rooter, because the cable and blades rotated as they cut through tree roots inside sewer pipe.Competing companies made imitations after the Blanc's patent expired in 1953, but the machine is manufactured by and for a United States company called the Roto-Rooter Plumbing & Drain Service.Źródło: https://en.wikipedia.org/wiki/Plumber%27s_snake
The houses usually they exchange seals and pipes, which has already gathered a lot of dirt and hair and suds.
But keep in mind that the performance of such work will be possible only if equipped house there are small seals and hydraulic tools.
They also by posting information about their activities on bulletin boards, and even spread leaflets around the city to encourage use of their services.So they can get regular customers, who will often benefit from their services..