Chem-Dry carpet cleaners use The Natural, a proprietary hot cleaning solution that uses the power of carbonation to lift dirt to the surface where our powerful suction tools whisk away the dirt - leaving carpets clean, deep below the surface. The PowerHead uses vortex suction to remove  dirt for maximum cleaning effectiveness. And experts agree - the Chem-Dry system works hard to deep clean carpets without leaving dirt-attracting residues. In fact, the Carpet & Rug Institute has awarded Chem-Dry's hot carbonating extraction process with its Seal of Approval. Cleaning carpets with Chem-Dry routinely can help keep your carpet warranty in compliance.