Get rid of household odors and improve the air quality while you vacuum with the Arm & Hammer Hoover Twin Chamber Vacuum Filter. This vacuum filter can be used in Hoover bagless uprights with the twin chamber system. Designed in adherence to HEPA standards, the media in the Hoover vacuum HEPA filter traps approximately 99.7 percent of dust mite debris, mold, animal dander and pollen. The vacuum cleaner filter contains baking soda particles that neutralize odor-carrying particles as air passes through. Refresh your home with clean, fresh-smelling air with this odor eliminating vacuum filter.