How to remove dirt from the spaces between planks of old wood floor?

Gai10615380
by Gai10615380
We have an old pine plank floor and there are grooves/spaces between the floor boards and dirt/dust accumulates in these tiny spaces and gets stuck. I usually vacuum and then use a toothpick to loosen dirt between each board and then vacuum again, but this is such a tedious task. Any suggestions?

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