It is being cleaned now to eliminate surface dirt, she added.

At the end of each working day, a wooden board was placed back over the tunnel entrance and re-covered with surface dirt.

Pat rebelled against putting Todd to bed without washing off some of the surface dirt.

You also want to use the hose to spray off most of the surface dirt before applying any elbow grease.

His stained gray uniform was torn in several places but had been brushed free of surface dirt.

Hand sanitizers do not remove surface dirt from the hands.

Keyboards tend to pick up a lot of surface dirt and grime from users' skin as well.

Conservationists tend to remove the surface dirt before the object is completely dry.

These creams can also remove surface dirt and marks made by tools.

"The palette was so darkened by all the different layers of surface dirt."