Abstract: A device for cleaning floors and similar surfaces, comprising a stick, connected, at a terminal portion thereof, by way of kinematic connection means, to a supporting means, which is associable with cleaning means, the supporting device comprising at least two arms, which lie along respective main longitudinal directions and are mounted so that they can rotate with respect to said stick about a respective articulation axis in order to pass, upon insertion of said supporting means in a wringing basket associated with a water containment bucket, from an extended condition, in which the respective main longitudinal directions define a working surface, to a retracted condition, in which the respective longitudinal directions of said at least two arms are angularly spaced from the working surface, return means being further provided which are adapted to return said supporting means to the extended condition as a consequence of disengagement from said wringing basket.