Abstract Biological oxidation of methane is and important constraint on the emission of this gas from areas, such as landfills to the atmosphere. We studied the effect of covering soils on methane emission in landfill assimilation. Microbial evaluation was done on virgin soil and later on soils used as covering material. This soil was later treated differently to see different effects that has on methane emission. Treatments applied were addition of compost in soil, moistured soil with methanotroph culture instead of water. Although methane was produced from the landfill, it was not as documented between 45 and 50%. We got between 6 and 18% production. In all the soils tested the uncultivated soil had the minimal emission as it emitted 0% methane. Sand, however, had some oxidation effect. The problem was that it is porous therefore gas migration is not restricted. This shows that the oxidative bacteria are available naturally is soils, but gets abandoned as the conditions favours their growth. The treatments done to soils had little effect as methane oxidation was not influenced or altered. This can be liked into in details. There have been some good observations in the assimilated landfill. As the landfill was not controlled the pH dropped and this in return produced more hydrogen as compared to methane. With all the altered gas balance produced the leachate changed.