If you have been taking care of messes promptly and keeping floors free of grit and dust, then you should only need to damp mop with a cleaning product a few times each year. NEVER use a sopping-wet mop. Excessive water can damage every sealant on wood floors and cause them to buckle. Lightly dampen a microfiber mop and always clean following the grain of the wood and allow the wood to dry completely before walking to prevent spotting. If you live in an area with hard water, damp mop with distilled water. The excessive minerals in hard water can leave the floor finishes looking dull. If you choose to use a commercial wood floor cleaner, choose one with a spray applicator or a mop that includes a refillable spray feature. Just a heavy mist of about one-half teaspoon per two square feet is adequate for cleaning. Too much product can leave floors sticky and actually attract more dirt.