Ionic Action
Odors are contaminated gaseous fumes. This is primarily moisture that clings to airborne particles which have a positive molecular ion charge. Ionic action takes place when positive ions and negative ions attract one another. Therefore the positive charged molecules (carrying the odors) are attraced to the negative charged mineral, Envirolite™, and locked inside the De-Odor Rod™. The De-Odor Rod's effectiveness can be renewed approximately every 30 days be placing it in sunlight for one or more days. With proper charging this product will last up to two years.
 

Zeolites
Zeolites are widely used as ion-exchange beds in domestic and commercial water purification, softening, and other applications. In chemistry, zeolites are used to separate molecules (only molecules of certain sizes and shapes can pass through), as traps for molecules so they can be analyzed.

Zeolites have the potential of providing precise and specific separation of gases including the removal of H2O, CO2 and SO2 from low-grade natural gas streams. Other separations include: noble gases, N2, freon and formaldehyde. However at present, the true potential to improve the handling of such gases in this manner remains unknown.

For more information visit http://en.wikipedia.org/wiki/Zeolite