Abstract: An improvement for a lawn mower of the type that propels clippings and a stream of air from its cutting area which improvement allows it to collect the clippings in a horizontally disposed plastic trash bag is disclosured. Transfer means, a plate with an opening sized to the mower discharge chute, is releasably mounted on the mower against the chute to receive the clipping and stream of air and pass them through it in one direction. The plate defines a vent opening to allow air to vent in the opposite direction and has means for releasably affixing the disposable bag's opening's marginal areas in a generally vertical plane such that the bag encloses both the vent and clipping openings, so that clipping and air air propelled into the horizontally disposable bag and air is vented from it.