pH neutral “no soap” zero residue
There are a lot of hardwood cleaners out there including Zepp from Lowes, Bona from the consumer marketing machine, and others. While the absolute best cleaners are commercial versions such as Spartan Chemical DMQ or NCL Mirage (soap free) they all work pretty well and are safe for your floors.
Just make sure if they are not already premixed you dilute them with distilled water and not hard tap water.