There are significant climate and environmental benefits to mitigating the environmental impacts of livestock and biogas production. Methane is a strong greenhouse gas that leads to global warming, ammonia emissions pollute groundwater and break down forming N2O, and odor is a serious local problem that is often regulated. There is a growing focus on reducing global methane emissions, including public pledges by governments and food companies. Although some solutions exist for ammonia and odor removal, no scalable method effectively treats methane from dilute sources, including enteric fermentation, or integrates the mitigation of all three pollutants. It was found that the Methane Eradication Photochemical System, utilizing UV-light, low levels of chlorine gas produced on-site from salt water, and a NaOH scrubber, could remove 98%, 94%, and 80% of methane, ammonia, and hydrogen sulfide, respectively, from the air in a pig barn. One test showed 73% removal efficiency at 33 ppm of methane with a specific power input of 0.68 kW h/gCH4 and a quantum yield of 1.06%. This work demonstrates an important step in developing scalable technology for eradicating low concentration methane sources from agriculture and shows that there is still significant room for further efficiency gains.