When you can no longer tilt the SensorWand in the direction of travel, just bring the SensorWand perpendicular to the sensor. Or tilt the SensorWand slightly in the opposite direction. Move the pad a little past the right-hand edge of the sensor (to make sure you pick up the dust at the edge). Work fairly quickly to complete the Cleaning Melbourne before the Eclipse™ evaporates from the Pec *Pad. Now—and only now—lift the SensorWand from the sensor.