Fleas are a parasite and must have blood in order to reproduce. All fleas pass through four stages: the egg, larvae, pupa, and adult.
The eggs are laid on the host animal and then fall onto the premises where they hatch into maggot-like larva. After approximately 2 weeks, these larva will develop into a pupa, or cocoon, where they remain until they emerge as an adult flea. Fleas development inside the house commonly takes place on and under rugs, in floor cracks and crevices, on and around furniture and pet resting areas. Almost all flea infestations can be attributed to pets.
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