Features:

• The BioGS® charcoal based AC filter eliminates many common household odors, VOC's (volatile organic compounds) and household chemical smells.
• BioGS charcoal based activated carbon filters have a much higher actived carbon concentration and density than ordinary activated carbon filters seen in the market. Odor problems from cooking, pets, smokers, microbial VOC's or other sources can be eliminated or minimized very effectively.
• (Washable) filter - it is recommended to replace the this filter every 3 years.

Editor Reviews:

Product Description:
Charcoal based Honeycomb Activated carbon filters are utilized in BioGS Air Purifiers to capture airborne gases, VOC's (volatile organic compounds) and odors. VOC's are often generated by off-gassing from carpets, composite wood furniture and other materials in the home. The effectiveness and the life of the carbon filters are determined by the concentration and density of activated carbon in the deodorization filter. Since the BioGS Honeycomb Activated carbon filters have a much higher activated carbon concentration and density than ordinary activated carbon filters in the market, they can more effectively remove odors from cooking, pets, smokers, microbial VOC's or other sources.

Rating : - Horrible smell
I had the same problem as the other Rabbit owner. I washed the filter and could not get rid of the odor. Next time I will not wash it and just have to get a new filter.