Why is there a small amount of garbage left on the threshold after the robot crosses it?
When the robot crosses the threshold, the raised threshold will scratch the robot brush and cause a small amount of garbage to fall. In addition, the gap caused by the lifting of the front of the robot over the sill will cause the area of the suction port to become larger, which will affect the suction effect of the suction port. It is recommended that the user manually clean this special position.