Truckmount carpet extractors are very effective carpet cleaning systems; however, they have limitations, according to Randy Koch, owner of Vista Building Services. Looking for options, Koch investigated the King Cobra PRO from U.S. Products. The PRO provides on-demand 212-degree Fahrenheit heat and has variable pounds of pressure per square inch (PSI) from 150 to 500. What''s more, this is a dual-surface machine, meaning it can be used to clean carpets and hard floors. "Now we''re mobile," says Koch. "We can clean carpets and floors in just about any building."