FreshSeatRx 4-Refill Filters fit FS-4 enclosures. Activated Charcoal Chemical Warfare Design High Absorbency-CWDHA Activated Carbon Filter Pads. Reusable Reset with Low Heat for Weeks of use. FR-4

- FreshSeatRx (FR-4 REFILL ONLY) is a new patent-pending filter and absorber designed to discreetly keep seating and room air fresh from gassy flatulence odors. Use it on all seating at home, the office or when traveling to permanently neutralize odors without using toxic sprays which can only mask odors temporarily. Simply sit and release. Odors are absorbed and neutralized instead of lingering in the seat or escaping into the air around you. - Included are four high quality FR-4 refills, Chemical Warfare Design High Absorption-CWDHA activated charcoal carbon filter-absorbers of which fit inside of the original enclosures. One roll of double face tape is included to keep the filter-absorber in an optimal fixed position, this is optional, if desired or needed. - For extra protection, more than one can be used. For best results, experiment with positioning lengthwise from front to back allowing gas to be absorbed by passing gas through the filter-absorber(s). - Each refill filter-absorber can remain highly effective for several weeks of use. However, when effectiveness begins to diminish depending on gas volume and severity of odor, the carbon filter-absorber will need to be restored by exposing it to a low heat source for several hours - eight to ten hours in direct sunlight works well. Eventually, these too will fail to be restored and should again be replaced with another set of FR-4 FreshSeatRx refills after several weeks or months of heavy use. - Simply remove the older ineffective filter-absorbers from their enclosures and replace them with your new FR-4 refills, then sit and release for effective FreshSeatRx flatulence control. Thirty day refund policy.