Never use power scrubbers or automatic floor cleaning machines that disperse water on the floor (especially water under pressure). The use of scrubber machines will void the warranty on your floor. Power scrubbers were designed for other surfaces, such as terrazzo and vinyl floors. Even the softest brushes will scratch and dull the finish. The chemicals typically used in these machines are too aggressive for wood and finishes. The machine’s liquid and scrubbing action can cup the floor, and pull paint and finish from the wood.