Companies searching for a cost-effective air scrubber alternative should look at various technologies when exploring biofiltration. Operating cost is the key factor that may support feasibility of biofiltration vis-à-vis other scrubber technologies, even when capital costs and documents may favor other technologies or appear to show no clear choice. The evaluation should include obtaining quotes for the chemical scrubber, incineration and carbon absorption. It should also include a five-year time span projection that assesses power consumption, regenerating cost for carbon, fuel costs for incineration and filter replacement for biofilters.