Three systems work together to eliminate most odor. The motor wraps and seals the soiled pad, including both liquids and solids. A barrier lining under each pad provides odor defense #1; the roll ends are capped for odor defense #2; and the entire waste compartment is closed and locked to limit airflow to provide odor defense #3. Most customers reports smelling little or nothing after the roll is wound up, and disposing a used roll is much easier and cleaner than handling a regular pad.