Roto-rooter
From Longman Dictionary of Contemporary EnglishRoto-rooterRo‧to-root‧er /ˈrəʊtəʊ ˌruːtə $ ˈroʊtoʊ ˌruːtər/ a US plumbing and drain cleaning company, whose advertising song was written in 1954 and is familiar to most Americans. It goes ‘Roto-rooter, that’s the name -- and away go troubles, down the drain.’