Q:

How did they sweep dust on the moon from inside the Apollo Lunar Lander?

I noticed from this answer the phrase:

by sweeping all the dust we could find

How did they sweep dust in the LM? And where did they sweep it to?

A:

According to the Constellation report referenced earlier, there was a sampling brush that could be used, and some spare cloth that seems to have been attempted. The dust problem was expected, especially in later missions, and they had a dust brush to brush off the dust from the lunar suits. 

