When evaluating floor mat cleaning machines, prioritize cleaning efficiency and drying capabilities. Key specs include motor power (typically 1.5kW to 2.2kW) for industrial use, brush rotation speed (800-1200 RPM) for deep fiber agitation, and water extraction rates. Ensure the machine features stainless steel or high-grade anti-corrosion housing to withstand constant exposure to moisture and cleaning chemicals. For high-traffic areas, look for models with automatic water intake and drainage systems to reduce manual labor.