Dust On Lander

Pictures show the feet of the lander have no dust on them.  Why is this?

Well think for a moment; how could the dust be above the lander feet to settle on it? Any blast from the lander's rocket would throw the dust down and to the side,very little would land on the feet. There is no air disturbance for the dust to billow around in. Throw the dust to the side and it will go that way, it won't come back to land on the feet.