We had our hardwood floors refinished using the sandless refinishing option a couple of years ago. We have a couple of spots where the original finish was beginning to wear in high traffic areas, and while the wear is still slightly visible the sandless refinishing did diminish there appearance, the rest of the floor looked great and has provided a protection from further wear, without the cost and hassle of full sanding and refinishing. Advantage set our expectations for this appropriately prior to the job compared to a full sanding and refinishing, and we were very happy with the Advantage team that did the work.