The solution? Wipe up spills and drops immediately with a dry rag or paper towel; sweep and vacuum at least weekly.
A simple solution for those inevitable stains and spots of daily life: gently clean the area with No. 1 or 0 steel wool and a small amount of mineral spirits or a wood floor cleaner.
Let the floor dry thoroughly. Apply a matching finish, feathering it into the surrounding area.
When the finish dries, wax and buff to a like-new perfection.