Fleas depend on a blood meal from a host to survive, so most fleas are introduced into the home via pets They may be found in bedding of the host, or wherever the eggs might have been dropped or deposited.
Larvae seek protection from bright light and will work their way into debris, into the deep pile zone of carpeting or other protective areas for coverage.
They feed on organic matter and on the blood-containing faecal droppings of the adult flea.
The larvae require moisture and thrive best in humid parts of the building, cracks and crevices of the floor or deep in the lower zone of carpeting where moisture levels are higher.
When fully grown, the larvae spin a “cocoon” (in which they pupate) with particles of debris that are nearby.
The pupal stage lasts from 5 days to 5 weeks depending on conditions, or it may over-winter. If a potential host steps on the pupal case when development is complete, an adult flea catapults out. The adult reacts to the presence of carbon dioxide and warm temperature to locate its host.