Three things:
Wipe your hands well enough that you’re not leaving muddy hand-prints on the door out of the warehouse.
There is usually dust and splashes on our floor, which leave dust on your shoes. Scuff your feet on the mats before you head into the carpeted area.
It would help if everybody swept up before they went home. We’ve got a nice broom and a great dustpan. This would reduce the amount of tracking.