Somebody wrote:

(tracking sawdust into the house is another issue).

Started my career working for the National Carbon Division of Union
Carbide.

This was a place that made things from graphite.

As a result, there was graphite dust all over the place even with dust
collection and motorized sweepers.

The graphite dust would get all over your shoes and into the pores of
your skin.

Had a pair of shoes that never left the plant.

Had a 2nd pair that were used for commuting from home to the plant and
back.

Once at home, it was time for street shoes.

It worked for me.

Lew