Use a broom, dust mop or vacuum to clean daily. Dirt and grit, tracked onto the floor, cause scratches that damage the flooring. A canister vacuum with a hard floor attachment is the best option, according to Apartment Therapy.
Use a towel to absorb any liquids spilled on the floor. A quick response limits the amount of water that soaks into the wood. Consider a no-drink rule for the area with the unfinished wood floor to prevent spills.
Use linseed oil to clean the floor instead of water. The oil replenishes the moisture in the wood and improves the shine. It helps to loosen any stuck-on grime to deep clean the floor. Apply the oil with a soft rag, and remove with a dry mop after it sits a few minutes.
Wax provides a hard surface to protect the wood from scratches. Apply a petroleum-based wax to the floor using a rag. Once the wax has a chance to settle, buff to improve the shine and reduce the chances of slipping on the floor. If you have a large area of hardwood flooring, consider buying or renting an electric floor buffer.