All you do is dab the chalk on the spot and brush off the extra dust.
Martha was quick to brush off his regret, telling him it was a fun exercise.
Pat hens dry with paper towels; brush off excess pickling spice.
Once the oil has been applied and the plaque is loosened, you can use a soft baby brush to brush off the plaque.
Both men were well aware this was tantamount to a brush-off.