This study demonstrated that straw applied to outdoor manure storage and other floating covers can effective reduce odour and H2S emissions from these units. These covers are cost effective, ranging in price from $0.08 per square foot for straw cover or $0.40 per square foot for a more premanenet geotextile cover. However, these covers are not without there challenges. The length of time the straw covers stayed afloat varied accordingly to factors like rainfall, depth of manure storage, surface area and manure characteristics. As well, larger manure storage units increase the difficulty in applying the straw in a evenly distributed pattern. During the manure removal process, additional agitation may be required in order to incorporate the straw in the manure.