F10SC is a primarily a disinfectant. F10SCXD contains eXtra Detergent for deeper cleaning which is why the directions state to rinse it well.
For layers of shop dust I would first use a shop vac to remove as much of the looser dirt as possible, followed by mild dish soap and a scrub brush to see how much dirt and grime can be removed without resorting to the harsher chemicals.
|