Grime in the grooves

Q: We have prefinished wood floors. My wife dust mops the floors every week and damp mops monthly. The normal grooves/cracks between the floors collect dust and show. One has to use a toothpick to clean it out.

Any better suggestion on a product that will clean out the grooves?

A: Perhaps a soft tooth brush to loosen anything stuck in the grooves and a crevice tool on the vacuum. I would suggest floor cleaning products such as Bona Pacific Floor cleaner.