Abstract: A spraying device for dousing the blade chamber of a rotary lawn mower to effect cleaning thereof. An annular, D-shaped conduit is secured to the ground by a centrally disposed stake. The stake orients the flat portion of the D-shaped conduit against the ground, providing a low profile in order for the mower to be positioned over the spraying device. The annular conduit has a plurality of orifices disposed on the top surface defining first and second annular formations. The first annular formation upwardly directs a controlled spray pattern perpendicular to the ground, while the second annular formation upwardly and outwardly directs a controlled spray pattern preferably 45.degree. from the perpendicular. A valved extension conduit in communication with the annular conduit is releasably coupled to a water source such as a garden hose connected to a water faucet for supplying the spraying device with pressurized water.