The ultimate alternative to fulling sanding your floors is called screen and re-coating. Most solid wood and engineered wood floors do not require a full sanding job. Screening removes scratches in your polyurethane at which point we then touch up stain issues and re-coat your floors with a new finish available in matte to a high gloss.  Screening and re-coating is less than half of the cost of fully sanding your floors, is dustless, and completed in only a day.