Abstract: A device for cleaning floors with the aid of a liquid comprising: a hollow, elongated suction mouth piece having a longitudinal axis and having an elongated suction port extending along the lower surface thereof parallel to said longitudinal axis, a suction tube connected to the mouth piece and communicating at one end with the interior of the mouth piece, the suction tube having an opposite end for connection with a suction device; a spray nozzle mounted adjacent each end of the elongated suction mouth piece, said nozzles being directed downwardly and inwardly toward each other.