Even so, their investigative buzzing and habit of lighting on anything available tend to make them quite an annoying pest. Most houseflies are considered to be nasty little creatures. In most cases this is because of their habit of visiting such areas as garbage, manure piles, compost and such. It is true that they tend to carry microscopic organisms that can be unhealthy. In most cases these organisms are found on their feet.
Houseflies spend the winter months as adults, making any warm area their home.
When spring arrives they emerge and the fertile females deposit their eggs in rotted or decaying materials. Each female will deposit no less than 100 eggs that will hatch in around one day. The larva of the housefly, commonly called maggots, will pupate for almost a week before becoming adults. In warm areas it is not uncommon for the female housefly to produce up to ten broods each year. Predators of the housefly include man, birds, reptiles and amphibians.