Add 2 tbsp. of Dr. Bronner's Sal Suds Liquid Cleaner to 1 qt. warm water. Mix to combine. Add more of the liquid cleaner if your hardwood floors are greasy or very dirty.
Dip a mop into the mixture and wring out as much of the solution as possible. Wring a second time to ensure that the mop is just slightly damp.
Push the mop over the floor to clean it.
Rinse the mop under clear water periodically. Wring out all of the water, and repeat Steps 2 and 3 until you've removed all the dirt on the floor.
Rinse the mop under clear water to remove any remaining cleaning solution. Wring the mop out, and run it over the floor to rinse away the cleaning solution residue.
Dry the hardwood floors completely with clean cloths.