Flies are very abundant across the globe and are often associated with human activity and thrive in warmer climates. They are found wherever suitable conditions for breeding allow it, such as refuse areas, retail environments, agricultural situations and even domestic environments.
They thrive in moist habitats and moist organic matter, along with being attracted to favourable breeding grounds such as animal housings, chicken and dairy farms, along with facilities that house horses in a stable.
If effective hygiene and cleaning standards are not maintained in these scenarios, along with the introduction of effective and regular fly control programs, these fly populations will expand and may spread into adjoining areas and then become a problem in local houses, restaurants, commerce etc.