A neighbor's judgement as to when an odor is a nuisance is based upon four considerations, says University of Nebraska Livestock Engineer Rick Koelsch. These include the frequency, intensity, duration, and offensiveness of an odor, or FIDO.

Livestock producers can minimize frequency and duration of odors by timing odor-producing activities such as turning manure piles or applying manure to crop fields. Odors, he points out, travel the same direction as air movement and disperse laterally very little except at very low wind speeds.

In most areas, low wind speed is least common between 9 a.m. and 6 p.m. Manure application between 8 a.m. and 4 p.m. allows time for odors to dissipate before lower wind speeds occur and typically has the lowest risk of offending neighbors. Producers should monitor their local forecasts and conditions and apply manure during times when breezes are most likely to reduce odor problems.