Plumbers are sometimes colloquially referred to as "rooters" because of the historical popularity of Roto-Rooter and specialized mechanical machines invented in the 1930s designed specifically to slice through invasive tree roots choking underground sewer lines. As these motorized root-cutting augers became ubiquitous for drain cleaning across North America, the nickname stuck. While traditional plumbers handle all aspects of piping, specialists focusing heavily on clearing stubborn root blockages earned this specific moniker.
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